bid in
Advanced (C1)formal
When the person selling something at an auction bids on their own item to stop it from selling too cheaply.
"When the bids failed to reach the reserve, the auctioneer bid in the painting on behalf of the estate."
Hear it in context

Auctioning Off My Stuff For Charity!
CDawgVODs · 9:14
Bid in my stream.

Hour 1: Connor O'Gara, The OG Kickoff
ESPN College Football · 24:43
have an automatic bid in this deal.

MLB Fantasy Baseball Q&A w/ Eric Samulski & James Schiano (5/11/26) | Rotoworld | NBC Sports
NBC Sports · 25:00
I did I I put a bid in for Bedet

Los Angeles mayoral candidate Spencer Pratt on his political inexperience: "I mean, look at Obama"
CBS News · 1:35
mount a serious bid in this race against the incumbent mayor.

2005: eBay - Money for Old Rope? | The Money Programme | BBC Archive
BBC Archive · 27:19
So, I put a bid in, and I got it for 30 p.