Marketplace App cost

How much does a marketplace app cost?

A marketplace connects buyers and sellers with listings, search, chat, payments and reviews, usually on web and mobile. Because both sides need their own flows, it tends to be one of the bigger builds.

Typical cost: $19,500 - $31,500
With AI agents: 8-11 weeks
Traditional build: 12-16 weeks

We've filled this in with a typical marketplace app scope. Change anything you like and the estimate updates as you go. You can download it as a PDF at the end.

1 What are you building?

2 How big is the first release?

3 Platforms

4 Features pick all that apply

5 Design level

6 Delivery speed

What drives the cost

Two-sided flowsBuyers, sellers and admins each get their own screens and rules.
Payments & payoutsTaking payments and paying sellers out, minus commission.
TrustChat, reviews, verification, and a way to handle disputes.

What a typical marketplace app includes

Seller onboardingSellers sign up, add identity and payout details, and start listing once an admin has approved their account.
Listings & discoveryListings with photos, categories, price and availability, plus search and filters that behave the same on web and mobile.
Checkout & split payoutsBuyers pay once, the platform keeps its commission, and the seller's share is released on a schedule after the order is confirmed.
Order chatMessages tied to a listing or order, with phone numbers and outside links filtered if you want deals to stay on the platform.
Verified reviewsOnly buyers with a completed order can leave a review, which keeps ratings honest and gives new buyers a reason to trust sellers.
Dispute deskAdmins see the order, chat and evidence in one case, then refund the buyer, release payment to the seller or split the amount.

How we usually build it

1 Supply side firstWe usually start with seller onboarding, listings and the admin panel, so buyers find real inventory on launch day instead of empty pages.
2 Money flowThen checkout, commission, payouts and order tracking, the parts that have to be correct before any real money moves.
3 Trust and appsChat, reviews, disputes and the mobile apps follow, built on orders that already work end to end on the web.

Common questions

How do sellers get paid?

The platform collects the payment through a gateway that supports split payouts, deducts its commission and sends the rest to the seller's bank account or wallet. Where split payouts aren't available, balances are tracked in the admin and paid out by bank transfer in batches.

How do we get the first sellers and buyers?

Most marketplaces seed one side by hand, often in one city or category, before opening to buyers. We build admin tools for bulk-adding listings and inviting sellers, but the first listings usually come from direct outreach by your team.

Should we launch on web or mobile first?

If buyers find you through search, start with the web. If they come back often, as with deliveries or bookings, the apps matter sooner. Both share one backend, so adding the second channel later doesn't mean starting over.