Concept and design for a multi-brand marketplace where customers of an existing brand ecosystem can buy and resell second-hand items.
A group of brands shared its customers, but those customers had nowhere to resell. The client-side PM wanted a full marketplace from day one. We convinced her to start with an MVP, weighing each feature’s value against its development cost: guided listing, and trust backed by the brands.
The brands in the ecosystem already shared a customer base and a certain level of trust. What they did not have was any place for a product to have a second life, so resale happened on generic platforms, off-brand and untracked.
Inside a merchant ecosystem of related brands, there was no platform to buy or resell second-hand products.
What each brand could guarantee, and where a shared marketplace made sense.
Condition grading, verification and guarantees defined before touching the catalogue UI.
Each feature rated on the value it brings and its development cost, to define an MVP we could defend.
Resale designed as a few guided steps, with assisted pricing and shipping rather than free-form.
What to launch first?
We cut the launch down to two flows, guided listing and buying, backed by the brands’ guarantee. Reviews, peer-to-peer messaging and auctions could wait for users.
What settled it: the value / cost matrix. Those features were expensive to build and worthless while the platform was empty.
Not this: The full marketplace wanted at the start: months of development before learning anything.
What does trust rest on?
Condition grading and guarantees come from the brand group rather than seller reputation.
What settled it: a new marketplace has no reviews yet; the brands already have their customers’ trust.
Not this: Peer reviews: impossible to bootstrap at launch, and the reason generic resale feels risky.
How should people list an item?
Sellers answer a few questions; the platform suggests condition, a price range and shipping.
What settled it: on the generic platforms we studied, free forms produced abandoned or incomparable listings.
Not this: An open form with photos and free text: faster to build, and the main source of unsellable listings elsewhere.
The client-side PM came with firm ideas: a marketplace needed reviews, messaging and a rich catalogue from day one.
Rather than debate features one by one, we placed each on a value / cost matrix. The conversation moved from “what we must have” to “what teaches us the most for the least”.
Outcome: the MVP was approved and the design delivered. The client ultimately did not launch the platform.
The project delivered a complete concept and a build-ready MVP: trust model, listing and buying flows, multi-brand interface system. It kept the customer, product data and brand experience inside the group. The client did not launch the platform, for its own reasons.
Platform not launched by the client, so no usage data. Happy to walk through the process in detail in person.
In second-hand commerce, the interface is not the product. The trust model is, and everything else is a consequence of it.
What I would do differently: prototype the listing flow with real sellers earlier. Pricing assistance was the step they hesitated on most.