Business marketplaces let you buy and sell websites, SaaS products, apps, newsletters and other online businesses. Some are open listings where anyone can post; others are brokers that vet each business, find buyers and manage the sale for a commission. For an eSide hustler, they’re both an exit, a way to sell something you built, and an entry, a way to buy an income stream instead of starting from zero.
See all 18 Business Marketplaces listings
In this guide
- What business marketplaces are
- How buying and selling works
- What selling really costs and pays
- The kinds of business marketplaces
- How to choose a platform
- Your first steps
- Costs, taxes and risks
- Red flags to watch for
- How to build your skills
- Recommended resources
- Owen’s take
- FAQ
1. What business marketplaces are
Many eSide hustles create an asset: a blog with traffic, a small SaaS with subscribers, a newsletter with readers. Business marketplaces turn that asset into money by connecting you with buyers.
They also work the other way. Some people buy a small, established site or app, improve it and either keep the income or sell it again later. This is often called flipping, and it’s closer to small-scale investing than to a side job.
Prices are usually set as a multiple of profit. A business that makes steady profit, has documented income and doesn’t depend on its owner’s daily work sells for more than one with patchy numbers.
Who buys online businesses
Buyers range from first-timers looking for a small income stream to experienced operators building a portfolio and funds that buy dozens of sites a year. Some want a hands-off asset they can grow; others want a product to add to an existing business. Knowing who is likely to buy yours helps you prepare: a portfolio buyer cares about clean numbers and easy handover, while a strategic buyer may pay more for customers, technology or a brand that fits what they already own.
Building something to sell
If you’re running an eSide hustle that creates an asset, a few habits make it sellable later. Keep the business’s money separate from yours from day one. Record revenue and costs every month. Use accounts and tools that can be transferred, rather than personal logins. Write down how things work as you go: where the site is hosted, which suppliers you use, how customers are handled. None of this takes long, and it can make the difference between a quick sale and a business no one will buy.
2. How buying and selling works
The process is similar on most platforms.
- The seller prepares. Revenue, profit, traffic and costs are documented, and the business is described honestly.
- The listing goes live. On open marketplaces, the seller writes it; on brokers, the broker vets the numbers and writes it.
- Buyers ask questions. Serious buyers request access to analytics, payment dashboards and accounts.
- An offer is agreed. Price and terms are negotiated, sometimes with part paid later.
- Escrow and transfer. The buyer pays into escrow, the seller hands over domains, code, accounts and content, and the money is released once the buyer confirms.
Brokers manage most of this for you; open marketplaces leave more of it to buyer and seller.
3. What selling really costs and pays
What you receive is the sale price minus the platform’s fee, which varies a lot by model.
- Open marketplaces often charge a listing fee upfront plus a success fee when the business sells.
- Brokers usually charge no listing fee but a larger success fee. Empire Flippers, for example, charges 15% on the first $700,000 of a sale, with lower rates above that.
- Some marketplaces charge sellers little or nothing and earn from buyer memberships instead.
A few patterns hold:
- Clean numbers sell. Verified revenue, a simple cost base and a clear history raise the price.
- Owner dependence lowers value. Businesses that run without you are worth more.
- Niche matters. SaaS with recurring revenue usually sells at higher multiples than content sites, which depend on search traffic.
How valuations work
Most small online businesses are valued as a multiple of their average monthly or yearly profit. The multiple goes up with age, steady growth, diverse traffic sources, recurring revenue and low owner involvement. It goes down with declining numbers, dependence on one platform or one customer, and anything the buyer can’t verify. Brokers usually give a free valuation before you list; it’s worth getting one even if you choose an open marketplace, because it shows how a professional sees your business.
4. The kinds of business marketplaces
Open marketplaces
Anyone can list, from starter sites to established businesses.
- Flippa, the largest open marketplace for websites, apps and domains
- SideProjectors, IndieMaker and Microns for side projects and small SaaS
- Investors Club for profitable online businesses
SaaS and startup marketplaces
Focused on software and recurring revenue.
- Acquire.com for SaaS and startup acquisitions
- TrustMRR for startups with verified revenue
- SaaSquare and Transferslot for selective micro SaaS listings
Brokers
Vetting, valuation and a managed sale for a commission.
- Empire Flippers, FE International, Quiet Light and Website Closers
- Motion Invest for smaller content sites and YouTube channels
Niche marketplaces
- LetterTrader for newsletters
- BizBuySell for offline and online small businesses in the US
- LoopNet for commercial real estate
Selling software to customers
- AppSumo, where software makers sell deals to a large audience of entrepreneurs
5. How to choose a platform
Ask five questions first.
- What are you selling or buying? SaaS, content sites, newsletters and ecommerce each have specialist platforms.
- How big is the deal? Small projects suit open marketplaces; larger businesses justify a broker.
- What does it cost? Compare listing fees, success fees and any buyer fees.
- How much help do you want? Brokers do the work; open marketplaces leave it to you.
- How are buyers vetted? Proof of funds and identity checks protect sellers; verified numbers protect buyers.
6. Your first steps
If you’re selling:
- Gather twelve months of revenue, profit and traffic data.
- Separate the business’s accounts, emails and payments from your personal ones.
- Write a short handover guide covering hosting, code, domains and suppliers.
- Choose a platform that fits the size and type of business.
- Answer buyer questions quickly and honestly.
If you’re buying:
- Start small, with a business you understand.
- Verify everything: payment processor access, analytics and bank statements.
- Use the platform’s escrow, never a direct transfer.
- Plan the first ninety days before you pay.
The handover
Once the money is in escrow, the real work starts. Domains, hosting, code repositories, email lists, social accounts, payment processors and supplier contacts all need to move to the buyer. Agree a checklist and a timeline before you sign, and include a short support period where the seller answers questions. Buyers should change every password and confirm that each asset is in their name before releasing funds.
7. Costs, taxes and risks
Fees. Listing fees, success fees, escrow fees and legal costs reduce what you keep or add to what you pay.
Due diligence. Buyers rely on numbers they can verify. Faked screenshots and inflated traffic are real risks.
Platform dependence. A content site can lose most of its traffic in a search update; an app can be removed from a store. Check where the income really comes from.
Taxes. Selling a business is usually taxable, often as a capital gain or business income depending on your country and how long you owned it. Get advice before large sales.
Earn-outs. Deals where part of the price depends on future performance carry risk for sellers.
8. Red flags to watch for
- Screenshots instead of access. Real sellers give view access to analytics and payment accounts.
- Requests to pay outside escrow. Always use the platform’s or a trusted escrow service.
- Sudden traffic spikes. They can mean bought traffic or a one-off event.
- Revenue that can’t be traced. If you can’t see it in the payment processor, don’t count it.
- Pressure to close fast. Good deals survive a few days of checking.
9. How to build your skills
- Learn basic valuation. Understand profit, multiples and what moves them.
- Learn to read analytics. Traffic sources, trends and engagement tell you what you’re buying.
- Learn due diligence. Checklists for revenue, costs, traffic, code and legal ownership protect you.
- Learn to grow what you buy. SEO, email marketing and pricing are the usual levers after a purchase.
- Watch sold listings. Marketplaces publish recent sales that show real prices and multiples.
10. Recommended resources
These are listed in our Resources section.
- Product Hunt, Tiny Startups and Startups Lab to launch a product and build traction before selling
- SaaSykit as a starter kit for building a small SaaS
- Wise for receiving international sale payments at a lower cost
11. Owen’s take
Business marketplaces are where eSide hustles become assets. If you build something, build it as if you’ll sell it one day: clean accounts, documented processes and income that doesn’t depend on you. If you buy, buy something small that you understand, verify every number yourself and assume the first ninety days will take more work than the listing suggests.
FAQ
How much is my website or SaaS worth?
Most online businesses sell for a multiple of their annual profit. The multiple depends on age, growth, risk and how much work the business needs.
Should I use a broker or a marketplace?
Brokers cost more but do the vetting, marketing and negotiation. Open marketplaces are cheaper and suit smaller sales.
How much does Empire Flippers charge?
Empire Flippers charges sellers 15% on the first $700,000 of the sale price, with lower rates above that.
Is buying a website a good side hustle?
It can be, if you understand the business and verify its numbers. It’s an investment with real risk, not a guaranteed income.
How do I avoid scams when buying an online business?
Get direct access to analytics and payment accounts, and always pay through escrow.
Sources
- CT Acquisitions, “SaaS Business Brokers: 2026 Fees Compared” (citing Empire Flippers’ published schedule): https://www.ctacquisitions.com/saas-business-broker/
- Investors Club, “Empire Flippers Fees for Buyers and Sellers”: https://investors.club/empire-flippers-fees-buyers-sellers/
All 18 Business Marketplaces listings
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Acquire.com: A Marketplace for Startup and SaaS Acquisitions
Acquire.com, formerly MicroAcquire, is a marketplace where founders sell startups and SaaS businesses to individual buyers,…
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AppSumo: Launch Your Software to a Big List of Buyers
AppSumo is a marketplace that sells software tools and digital products to entrepreneurs and small businesses,…
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BizBuySell: The Big Marketplace for Main Street Businesses
BizBuySell is the largest US marketplace for buying and selling small businesses: restaurants, service companies, retail…
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Empire Flippers: A Vetted Marketplace for Profitable Online Businesses
Empire Flippers is a marketplace and brokerage for established online businesses: content sites, ecommerce and Amazon…
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FE International: M&A Advice for Selling Tech Businesses
FE International is an M&A advisory firm that helps founders sell SaaS, ecommerce, content and other…
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Flippa: Buy, Improve and Sell Online Businesses
Flippa is the largest open marketplace for buying and selling online assets: content sites, ecommerce stores,…
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IndieMaker: A Community Marketplace for Indie Projects
IndieMaker is a marketplace where makers buy and sell side projects, unused domains and small online…
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Investors Club: A Commission-Free Marketplace for Online Businesses
Investors Club is a marketplace for buying and selling profitable online businesses: content sites, ecommerce stores,…
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LetterTrader: The Marketplace for Newsletters
LetterTrader is a marketplace dedicated to buying and selling newsletters and newsletter-related assets, such as a…
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LoopNet: The Marketplace for Commercial Real Estate
LoopNet is the largest online marketplace for commercial real estate in the US: offices, retail, industrial…
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Microns: A Marketplace for Micro Startups
Microns is a marketplace for small online businesses: micro SaaS, apps, browser extensions, newsletters, content sites…
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Motion Invest: A Marketplace for Smaller Content Websites
Motion Invest is a marketplace built for content websites: blogs and niche sites that earn from…
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Quiet Light: Sell an Established Online Business With a Broker
Quiet Light is one of the longest-running brokerages for online businesses. It helps owners sell ecommerce…
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SaaSquare: A Marketplace for Micro SaaS and AI Startups
SaaSquare is a marketplace focused on small SaaS and AI products. Based in London and founded…
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SideProjectors: Sell or Showcase Your Side Projects
SideProjectors is a long-running marketplace where makers list side projects for sale or simply show them…
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Transferslot: A Selective Marketplace for Side Projects
Transferslot is one of the early side project marketplaces. It started in 2017 as a place…
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TrustMRR: A Startup Marketplace Built on Verified Revenue
TrustMRR started as a public leaderboard of startup revenue and grew into a marketplace for buying…
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Website Closers: Brokerage for Ecommerce, SaaS and Online Businesses
Website Closers is a business brokerage that specializes in internet and technology companies: ecommerce brands, Amazon…
