Escrow, seller accounts, payouts and the day a deal goes wrong. We build them — and we have been running one of our own, with other people's money in it, since 2017.
A marketplace is not a shop with more sellers. The catalogue is roughly a tenth of the work. The rest is the part that only shows itself once real money and real strangers are involved: what happens when the buyer says it never arrived, when a seller wants paying before delivery is confirmed, when somebody signs up who should not be there at all.
Those are not edge cases. They are Tuesday. Running AdrenalineShop means we have had to answer every one of them with our own name on the outcome, and that is a different kind of knowledge from having shipped a platform and moved on to the next client.
Not a case study. A live platform where strangers on different continents send each other equipment worth thousands, and nobody gets robbed.
Escrow, payouts and refunds, with unambiguous states and a reconciliation a human can perform at any point. The failure that matters is not a crash — it is money in a state nobody can explain.
Seller accounts, listings and proportionate verification — more assurance as the stakes rise, rather than a wall in front of everybody on day one. Too little attracts exactly the wrong users; too much and honest sellers abandon signup.
Disputes, evidence and a decision path designed in from the start rather than bolted on after the first angry email. A platform without one inherits every argument personally.
Real crawlable pages for every listing and category — the reason people arrive at all — plus the monitoring that watches for the patterns that come before a scam, and flags them for a person to judge.
Listings are the easy tenth. The rest is money that is not yours, identity, and the day a deal goes wrong.
Build storyHow the money actually moves when a platform sits between two strangers.
Trust & safetyWhat responsible monitoring looks like — and why nobody serious publishes how theirs works.
Describe who sells, who buys, and who holds the money in between. You get an honest answer within one business day — including "start smaller" if that is the truth.
There is no honest single number, and anyone who gives you one before understanding the money flow is guessing. The cost is driven by how payment moves: a platform that only introduces buyers to sellers is a fraction of one that holds funds until delivery is confirmed. Tell us how you want money to move and you get a real figure in writing before anything is built.
It depends on the stakes and on whether your two sides have any reason to trust each other. For low-value, repeat-purchase goods, escrow is usually overkill. When strangers in different countries are sending each other something expensive, it is the entire product — without it the honest sellers leave first, because they are the ones who cannot afford to be defrauded.
Usually yes, and often you should. A single-vendor store that proves people want the thing is a better use of the first budget than a two-sided platform with nobody on either side. The build is planned so the catalogue and checkout are not thrown away when sellers are added.
Run one. AdrenalineShop is ours, it has been trading since 2017, and it handles other people’s money — escrow, payouts, disputes and the awkward days included. Everything we recommend is something we have had to live with ourselves, which is a different kind of knowledge from having shipped it and moved on.
Yes. Adrenaline Group LLC is a US-registered company and we work with clients internationally. The work happens online; where you are located does not change what we can build.
