Ecommerce Marketplace Development

An ecommerce platform is built around one seller with one catalogue and one bank account. A marketplace is built around the opposite: many sellers, each with their own catalogue, their own inventory, and their own bank account waiting for a payout after the platform takes its commission.
RaftLabs builds custom multi-vendor marketplace platforms for ecommerce operators launching or scaling an online marketplace where multiple sellers list and fulfil independently. Seller onboarding, commission and fee configuration, split payments, payout automation, and dispute handling, all built to your category and seller model. Most marketplace projects deliver in 14 to 20 weeks at a fixed cost.

  • Seller onboarding with identity verification, business documentation, and payment account connection

  • Per-seller product catalogue management with category-specific attribute requirements

  • Commission and fee configuration with fixed, percentage, and tiered structures per category or seller tier

  • Automated payout to seller bank accounts after buyer settlement with platform fee deducted

Recent outcomes

Social commerce · Sponzee

25% boost in brand sales

Built a social commerce marketplace connecting brands and creators, boosting brand sales after launch.

Marketplace platform · Multi-vendor build

12 weeks to launch

Delivered a multi-vendor marketplace from concept to working software with every sprint on schedule.

4.9
on Clutch
See our work

The problem

Sound familiar?

  • Manually splitting order payments between sellers and the platform because there is no automated payout system connected to your commission rules?

  • Seller onboarding taking days because verification, catalogue setup, and payment account connection are all manual processes with no seller-facing portal?

Short answer

RaftLabs builds custom multi-vendor marketplace platforms for ecommerce operators launching or scaling an online marketplace where multiple sellers list and fulfil independently. A custom marketplace covers seller onboarding and verification, product listing and catalogue management per seller, commission and fee structure configuration, order routing to the correct seller, split payment and payout automation to seller bank accounts, buyer and seller dispute management, and marketplace analytics. Most marketplace projects deliver in 14 to 20 weeks at a fixed cost.

Key takeaways

  • Custom ecommerce marketplace platforms typically run $90,000 to $300,000 depending on verification, commission, and payout complexity
  • Stripe Connect, Adyen Platforms, and Mangopay are the standard split-payment providers for marketplace payouts
  • Seller onboarding, commission engines, and dispute workflows are the core software problem, not add-ons to a standard ecommerce platform
  • Most marketplace projects deliver in 14 to 20 weeks at a fixed cost

Trusted by

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Marketplace delivery, by the numbers

products shipped
100+
industries served
24+
cost delivery
Fixed
week delivery for marketplace platforms
14-20

Why ecommerce marketplaces need purpose-built software

An ecommerce platform is built around one seller with one catalogue and one bank account. A marketplace is built around the opposite: many sellers, each with their own catalogue, their own inventory, their own fulfilment operation, and their own bank account waiting for a payout after the platform takes its commission. Those are structurally different software problems.

When marketplace operators try to run on a standard ecommerce platform with a multi-vendor plugin, the gaps appear quickly. Commission calculation requires manual spreadsheet work because the plugin doesn't know what rate applies to which seller for which category. Payouts require the operator to manually initiate transfers after reconciling which orders have been delivered and are past the dispute window. Seller onboarding is a back-and-forth email process because there's no seller portal.

The seller management layer, commission engine, split payment infrastructure, and dispute workflow aren't add-ons to an ecommerce platform. They're the core of what a marketplace operator needs to run the business.

How we work

From scope to live marketplace

  1. Week 1
    01

    Marketplace model scoping

    We map your seller types, commission structure, category requirements, and dispute policy. You leave week 1 with a written scope document and a fixed-price quote.

  2. Weeks 2-4
    02

    Design and payment architecture

    Seller portal and buyer experience design approved in Figma. Split payment provider selected and payout schedule, hold periods, and dispute windows configured against your policy.

  3. Weeks 5-16
    03

    Build and integrate

    Seller onboarding, catalogue management, commission engine, and payment integration built in parallel. QA runs against real commission and payout scenarios every sprint.

  4. Final 4 weeks
    04

    Seller pilot and launch

    A pilot group of sellers onboards and lists before the full marketplace opens. Payout accuracy validated against real transactions before general availability.

What clients say

What our clients say

Three-year average engagement. Founders and operators describing the work in their own words. No marketing varnish.

Dr. J. Ayo Akinyele
Dr. J. Ayo Akinyele
USA flagUSA
President, Co-Founder

I was pleased with RaftLabs team quality, consistency and execution.

01 / 02

Have a marketplace project?

Tell us the seller types you plan to onboard, the commission structure you need to support, and where your current setup creates manual work for your operations team. We will scope the right platform.

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Frequently asked questions

A standard ecommerce platform is built for one seller managing one catalogue and receiving all revenue from sales. A multi-vendor marketplace is built for an operator who hosts many sellers, each managing their own catalogue and inventory independently, with the platform taking a commission on each transaction and remitting the balance to each seller. The software difference is significant: a marketplace requires seller identity management, per-seller catalogues with category-specific requirements, a commission calculation engine that knows which rate applies to which seller and transaction, split payment infrastructure that holds buyer payments in escrow and distributes them correctly, and a payout system that moves money to seller bank accounts on a schedule.

The standard model uses a payment provider that supports marketplace or platform payments. Stripe Connect is the most common for new marketplaces, with Adyen Platforms and Mangopay as alternatives for higher volumes or specific geographic requirements. The buyer pays the marketplace, not the individual seller. The payment provider holds the funds and allows the marketplace to route portions of each payment to the connected seller accounts after applying the commission deduction. Payout timing, hold periods, and the handling of refunds and disputes are all configured within the platform.

Yes. Category-specific requirements are usually the primary reason a marketplace operator cannot use a generic platform like Mirakl or a WooCommerce multi-vendor plugin. A marketplace for professional trade tools has different seller verification requirements than a fashion resale marketplace. We scope the seller verification workflow, category attribute requirements, and any regulatory considerations during project discovery and build them into the platform as first-class features.

A marketplace platform covering seller onboarding with manual verification, per-seller catalogue management, standard commission calculation, Stripe Connect split payments and payouts, basic dispute handling, and operator analytics typically runs $90,000 to $160,000. A full platform with automated KYC verification, complex commission structures, multiple payout providers, advanced dispute arbitration, and deep seller analytics typically runs $170,000 to $300,000. Every project is scoped before pricing and delivered at a fixed cost.

Work with us

Tell us what you need. We'll tell you what it would take.

We scope Ecommerce Marketplace Development in 30 minutes. You walk away with a clear cost, timeline, and approach. No commitment required.

  • Scope and cost agreed before work starts. No surprises. No obligation.
  • Working prototype within 3 weeks of kickoff.
  • Pay by milestone. You see progress before each invoice.
  • 60-day post-launch warranty. Bug fixes, UI tweaks, and deployment support. No retainer.
  • All conversations are NDA-protected.