# Biddr

> Import absentee bids and sale results from Biddr into Selloff, and import your Biddr bidders into your client records.

- URL: https://www.selloff.auction/integrations/biddr
- Language: English
- Category: Platforms
- Vendor website: https://biddr.com
- Last updated: 2026-10-07
- Français: https://www.selloff.auction/fr/integrations/biddr.md

## At a glance

- Absentee bid sheets imported for one or several Biddr auctions
- Results import records the lots won by Biddr bidders as sales
- Optional hourly import of your Biddr bidders into Selloff contacts
- Biddr bidder numbers can be kept as Selloff bidder numbers
- Optional rounding of bids up to the next bid step

## What the Biddr integration does

Biddr is an online bidding platform for coin and collectibles auctions. The Selloff integration uses the Biddr API in three ways, all authenticated with the token you generate in your Biddr account.

## Absentee bids

Before the sale, open **Import bids** on the sale and choose Biddr. Selloff reads the bid sheets of the Biddr auction (or of several Biddr auctions linked to the same Selloff sale), matches each bidder to an existing client by Biddr ID or email address, proposes new contacts for the others, and records the bids on the lots once you confirm. Amounts between two increments can be rounded up to the next bid step.

## Results

When the sale itself runs on Biddr, the **Biddr results** import brings back the outcome: for every lot won by a Biddr bidder, Selloff records a sale for that bidder at the hammer price. The lots are then ready for [automatic invoicing](https://www.selloff.auction/features/automatic-invoicing.md).

## Bidder list

If you enable the bidder list sync, Selloff imports your Biddr bidders as contacts every hour, creating new records and updating those it recognises. You can also start the sync by hand from the settings. Your client base then already contains Biddr bidders before their first bid arrives.

See also [bid import from platforms](https://www.selloff.auction/features/bid-import.md) and [client records](https://www.selloff.auction/features/client-records.md).

## Related features

- [Bid import from platforms](https://www.selloff.auction/features/bid-import.md): Bring bids, results and registrations from Drouot, Sixbid, Numisbids, Philasearch, Biddr and Excel files into your sale, with contact matching and a review step.
- [Bidder registration & tracking](https://www.selloff.auction/features/bidder-management.md): Register bidders before or during a sale, number them automatically, set purchase limits and request guarantees, with every bidder's activity on one page.
- [Results & statistics](https://www.selloff.auction/features/results-statistics.md): Follow each sale from bids to results: realised prices, consignor results, sell-through rate and performance against estimates.
- [Automatic invoicing](https://www.selloff.auction/features/automatic-invoicing.md): Create buyer invoices and consignor statements from recorded sales in a few clicks, with premium, insurance, fees, shipping and VAT calculated automatically.
- [Client records & history](https://www.selloff.auction/features/client-records.md): One record per contact with addresses, ID and bank details, tags, consignments, bids, invoices and a complete activity history shared by the whole team.

## Frequently asked questions

### What is the difference between the Biddr bids import and the Biddr results import?

The bids import brings in the absentee bid sheets placed on Biddr before the sale. The results import is used after a sale run on Biddr: it records the lots won by Biddr bidders as sales in Selloff, ready for invoicing.

### Can Selloff keep the bidder numbers used on Biddr?

Yes. With the **Preserve platform bidder number** setting, bidders created from a Biddr import keep the number they had on Biddr, so paddle numbers match on both sides. Otherwise Selloff assigns the next free number of the Biddr bidder type.