Marketplace Development CostWhat a marketplace
really costs
to build.
Marketplace pricing ranges wildly, and most of it is vague. Here is a straight answer: what drives the cost, what a focused MVP versus a larger build includes, and honest fixed pricing from £16,000 — no hourly meter, no surprises.
app.yourmarketplace.com
Live marketplace
Two-sided liquidity, one platform
Supply and demand, matched. Listings, search, payments, and trust — built to move volume.
Recent activity
NNew listinglive
BBroker onboardedverified
EEnquiry matchedsent
PPayment cleared£4,200
Platforms and marketplaces we have built and worked on
sellyourboat.iobusesforsale.comeuropeanyachtbrokers.comKompiPayLoopa
What drives costWhere the money
actually goes.
A marketplace costs what it costs because of the surface area of the two-sided problem. These are the real drivers.
01
Two-sided complexity
How much buyers and sellers differ, and whether each needs its own experience.
02
Search & discovery
Simple filters are cheap; sophisticated, relevant discovery costs more.
03
Payments vs enquiry
On-platform payments and escrow cost far more than a connect-and-enquire model.
04
Trust & verification
The more the market demands vetting, the more infrastructure it needs.
05
Seller & admin tooling
Dashboards and management tools add cost but keep supply around.
Why marketplace quotes range from thousands to six figures
Search for marketplace development cost and you will find numbers from a few thousand pounds to well over a hundred thousand. That range is not just markup — it reflects genuinely different things being sold. At the low end is a template dropped onto a marketplace SaaS: fast and cheap, but you rent it forever and cannot really change it. At the high end is a large custom platform from a big agency, billed hourly, often over-scoped.
Our pricing sits deliberately in between and is fixed: from 16,000 GBP for a focused marketplace MVP, from 30,000 GBP for a larger build. You get a real custom platform that you own outright — not a rented template — without the open-ended hourly bill of a large agency. That is the sweet spot for a founder who needs something real, ownable, and priced with certainty.
The reason we can price it this way rather than padding for unknowns is simple: we have built a marketplace before, with our own money, so we know where the work actually is.
The cost-saving moveThe cheapest marketplace is the one that proves liquidity first
The single biggest way to control marketplace cost is not to negotiate the day rate — it is to build less, first. Most marketplaces do not fail because they lacked features. They fail because one side never showed up. So spending a large budget to build the full vision before you know the market is there is the most expensive mistake available.
A focused MVP is cheaper because it deliberately builds the smallest thing that can prove one side will show up and transact. From 16,000 GBP, you test the single most important assumption — liquidity — before committing to the rest. If the market responds, you invest in scale with confidence. If it does not, you have spent 16,000 finding out, not 80,000.
This is not a discount version of the vision. It is the disciplined version. Prove the market with the MVP, then spend the larger build budget on a marketplace you already know people want. That sequence is how you spend the least to get the most.
What you pay forWhat is in the price, and what is passed through
The fixed price covers everything that is the build: the design, the full-stack development, the two-sided platform, and the complete codebase handed to you on delivery. There is no separate design fee, no per-screen charge, no licensing. The number you agree is the number.
What sits outside the fixed price is third-party usage, and we pass it through to you at cost, never marked up. That means payment processing fees, mapping or location APIs, and AI inference if your marketplace has an AI layer. These scale with how much your marketplace is used, so it is fairer for them to sit with you directly and transparently than to be baked into a build price as padding.
That is the whole picture. A fixed build price you own outright, plus transparent pass-through usage. No hourly meter, no surprise invoices, no line items you did not expect.
ProofWe price with confidence because we have built one
The reason we can quote marketplace development as a fixed price, rather than a wide hourly range hedged against the unknown, is that the unknowns are known to us. sellyourboat.io is a Wall & Fifth venture: a marketplace we built and run, carrying over 12,000 listings from more than 100 vetted brokers across 18 countries, with a Claude-powered AI layer serving both sides.
Having built and scaled a real marketplace with our own money, we know where the work actually is — and where it is not. That is why we can price a focused MVP at 16,000 and a larger build at 30,000 with confidence, instead of padding every estimate against surprises we have already dealt with on our own product.
We have also delivered marketplace work for busesforsale.com and europeanyachtbrokers.com. The pricing is grounded in having done this, repeatedly, for real.
ProofPricing grounded in a marketplace we built and run
sellyourboat.io is a Wall & Fifth venture. Having scaled a real marketplace ourselves is why we can price yours with certainty.
£30k
extensive build, fixed
Fixed pricingThe numbers, plainly
No hourly meter. You know the price before we start, and you own everything we build.
Marketplace MVP
from £16,000
Listings, search, accounts, and a first transaction or enquiry path. The smallest build that proves liquidity.
Extensive Build
from £30,000
Payments, reviews and trust, seller tooling, and admin — the systems to handle a market as it grows.
Embedded Partner
from £8,000 /mo
Ongoing senior involvement once live, if you want a partner in scaling the market rather than a one-off build.
Get a fixed price
for your marketplace.
Tell us the market and roughly what you have in mind. We will scope it and come back with a clear, fixed number — MVP or full build.