Answers
How do you buy a Chrome extension, and what should you check?
Short answer: Chrome Web Store items move through a transfer request from the seller's developer account, which the original publisher must confirm; Google says it can take up to 7 days and only items without violations transfer. Value the extension on verified profit, not weekly users, and read the store's data and ad policies before changing how it makes money.
How is a Chrome extension transferred to a buyer?
Through Google. The Chrome Web Store One Stop Support transfer form (read 16 October 2026) asks for the item ID, the original publisher's email and the destination email, and notes that:
- the original publisher must confirm the transfer from their email address;
- the destination developer account must already be registered, which costs a $5 one-time fee;
- only published items without violations are transferred, at most 5 items per request;
- transfers can take up to 7 days.
Chrome's "Share ownership" documentation also lets a publisher add members with roles, which is useful during a handover but is not a change of owner. Put the transfer request, and the seller's duty to confirm it, in the purchase agreement, and pay through escrow until the item shows in your dashboard.
Why are weekly users not the same as value?
A listing that says "38,000 weekly users" describes reach, not income. Buyers pay for profit from a paid plan, sponsorships or licensing that you can verify in Stripe or the payment provider. Some buyers want large free extensions to monetise them differently, and that is where the store's rules matter: the Chrome Web Store Program Policies restrict collecting browsing activity, prohibit selling user data, require affiliate links to give users a "direct and transparent" benefit, and say that if an extension introduces different data practices after installation it "must prominently disclose" them. A plan that depends on quietly changing what the extension does is a plan to lose it.
What should you verify before buying an extension?
- Revenue in Stripe or the payment provider for 12 to 24 months, matched to deposits.
- Users and reviews in the Developer Dashboard by week, and the rating trend.
- Policy history: past warnings, rejections or takedowns.
- Code: unminified source, build steps, and every remote service it calls.
- Permissions: the store policy requires the narrowest permissions needed, so check each one is used.
- Browser dependence: Manifest V3 requirements and whether Edge or Firefox versions exist.
What does an extension listing look like through the checker?
A composite tab-manager extension asks $24,000 on $1,100 of MRR from a Pro plan and $1,000 a month of profit. The checker gives 24 months of payback, flags platform dependence and notes that no churn figure was given. Open this example in the checker.
Composite example, not a real listing
Asking price: $24,000
MRR: $1,100
Average monthly profit: $1,000
Business age: 20 months
Owner hours: 3 hours per week
38,000 weekly users
Traffic sources typed in: Chrome Web Store 85%, Organic search 10%, Direct 5%.
What the red-flag checker returns: a payback of 24 months (2× annual profit) on average monthly profit, and these flags:
Medium Depends on Chrome Web Store
The listing relies on a platform the buyer does not control. A policy, fee, algorithm or account change there can cut revenue quickly.
Ask: If Chrome Web Store changed its rules or closed the account tomorrow, what share of revenue would be at risk? Has it happened before?
Medium No churn figure for a recurring-revenue business
Churn decides how much of today's revenue will still be there in a year. Without it, the price is a guess.
Ask: What were monthly customer churn and revenue churn for each of the last 12 months?
Medium No connected data source mentioned
The figures appear to be typed in by the seller. Nothing in the text says revenue or traffic is connected from Stripe, PayPal, analytics or a marketplace check.
Ask: Can you give read-only access to the payment processor and analytics, or exports that match the P&L?
Low Concentration not disclosed
The listing does not say how much revenue comes from the largest customer, affiliate program or traffic partner.
Ask: What share of revenue comes from the top 1 and top 3 customers or partners?
Assume 5% monthly churn on the Pro plan and $60 of new MRR a month: the churn stress test gives 23.4 months of payback, and without new upgrades MRR would fall to $594 in a year.
Composite example, run through the SaaS churn stress test
| MRR today | $1,100 |
|---|---|
| Monthly revenue churn | 5% |
| New MRR added each month | $60 |
| Profit margin | 90% |
| Asking price | $24,000 |
| MRR after 12 months, new sales continue | $1,146 |
| MRR after 12 months, no new sales | $594 |
| Payback if MRR stayed flat | 24.2 months |
| Payback with churn and new sales | 23.4 months |
| Payback with churn and no new sales | never |
| All future profit if sales stop | $19,800 |
We publish our own listing-check extension, which runs locally and sends nothing, and the same rules are available to AI assistants through our free MCP server.
Frequently asked questions
How long does it take to transfer a Chrome extension?
Google's Chrome Web Store transfer form says transfers can take up to 7 days, after the original publisher confirms by email. The receiving account must already be registered.
Can I monetise a free Chrome extension after buying it?
Only within the Chrome Web Store Program Policies, which restrict browsing-data collection, ban selling user data and limit affiliate links. Any change in data practices must be prominently disclosed.
How do I value a Chrome extension?
On 12 months of verified profit, like other small software, adjusted for churn on paid plans and for dependence on one browser store. User counts matter only through the revenue they produce.
Sources
- Chrome Web Store Help, One Stop Support (item transfer request), read 16 October 2026
- Chrome for Developers, Chrome Web Store Program Policies (last updated 22 May 2025), read 16 October 2026
- Chrome for Developers, Share ownership, read 16 October 2026
- FirstPass Memo, red-flag checker rules, our own rules, published as /rules.json
Related
- Churn stress test
- Red flags when buying a small SaaS
- Red flag: depends on a platform
- Our own browser extension (how we handle data)
- How to verify Stripe revenue
- Glossary of listing terms
- More questions buyers ask
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Composite examples are invented and labelled. Figures from other sites are quoted with a link and the date we read them; FirstPass figures are asking prices and seller-stated profit, not sale prices. Informational screening only, not investment, legal or tax advice.