Seller guide · Surplus and reuse
Sell what's left over to companies that can use it.
Project leftovers, returns, slow movers, reclaimed and demolition material: list them in minutes, sell them to other construction companies and get paid once the buyer has collected.
Selling on Greyn
- Buyers
- Companies only, registered with their enterprise number
- Your listing
- Free, in Dutch, French and English
- Payment
- Bancontact or bank transfer, held until pickup
- Your cost
- A service fee, only when you sell
01What you can list
Four kinds of stock, one listing form.
Every listing says what kind of material it is, so buyers know what they are looking at before they ask, and can filter on it.
New
Unused material, still in original packaging
Surplus
Leftover materials from projects (over-ordering, design changes), packaging opened
Reuse
Cleaned/refurbished material, ready for a second life
Demolition
To be reclaimed from demolition project
A listing carries an eco label only when its seller confirms it meets the requirements for an ecological claim.
NoteNot free yet? Give the listing an available-from date. Buyers see it straight away, can ask to be told when it opens, and can order from that day.
02Listing
From a photo to a live listing.
You don't need a product sheet. A photo is enough for Greyn to draft the listing; you check it and set your terms.
Take a photo
Photograph the material where it is: on site, on the yard or in the warehouse.
Check the draft
Greyn recognises the material and fills in the category, title, description and specifications. You correct what needs correcting.
Set your terms
A price per unit or for the whole lot, the quantity, the smallest order you accept and where buyers collect.
Publish
The listing goes live in Dutch, French and English: Greyn translates it for you.
NoteA whole warehouse to list? Keep your stock in the free inventory, import it from an Excel file and turn any item into a listing with one click. Inventory for companies
03Costs and payout
No fee until you sell.
An account, your listings and the inventory cost nothing. When a sale completes, a service fee comes off the amount paid out to you.
- Account and listings
- FreeNo subscription and no listing fee.
- Inventory
- FreeAlso before you sell anything.
- Service fee
- A percentage of the sale price excl. VAT, deducted from your payout. The listing form shows your rate before you publish.
- Payout
- To your company's bank account through Stripe, once the buyer confirms pickup, or automatically 14 days after payment if no dispute is open.
NoteTo publish, connect your company to Stripe once. Stripe verifies the company and holds your bank details; Greyn does not store them. Until then you can draft listings and build up your inventory.
04Your terms
Your material, your conditions.
You set the price and the pickup. Greyn handles the payment and keeps your address private until there is an order.
- Negotiate in the chat — buyers ask their questions in a conversation, and you can answer with a price offer for a set quantity, which they accept and pay at checkout.
- Sell part of a lot — set the smallest order you accept, or sell the lot as a whole. Each sale lowers the quantity, and the listing is marked sold when nothing is left.
- Keep your address private — the listing shows only the postal code and municipality. The buyer sees the exact pickup address once they have ordered.
- Ready for pickup day — print an A4 label with a QR code for each listing and put it on the material in your warehouse.
05FAQ
Frequently asked questions
Creating an account, listing and using the inventory are free. When a sale completes, a service fee (a percentage of the price excl. VAT) is deducted from your payout. The listing form shows your rate before you publish.
As soon as the buyer confirms pickup in the app, the payment is released and Stripe pays it out to your company's bank account. If the buyer neither confirms nor opens a dispute, the payment is released automatically 14 days after it was received.
Stripe handles the payments and payouts on Greyn. Connecting your company once lets Stripe verify it and pay you out, and your bank details stay with Stripe.
You choose the pickup location when you create the listing. Once there is an order, you agree the day and time with the buyer in the conversation about that order.
Yes. Set an available-from date, for example for material that comes free when demolition starts. The listing is visible straight away and can be ordered from that day.
Yes. Change the price, quantity or description whenever you need to, or pause the listing to take it off the market for a while. Orders already placed keep the terms they were placed on.
06Get started
Put your first lot online today.
Create a free company account, draft a listing from a photo and publish it once Stripe has verified your company.