Buy Now in auction
An optional fixed price inside an active auction — paying it ends the auction immediately at that amount. Lets a buyer skip the bid war for certainty.
When it makes sense
A buyer who needs certainty (e.g. a pending product launch on the brand name) pays the BIN to lock the domain rather than risk losing the auction.
Pricing
The BIN is typically set above the seller’s comfortable expected close — it’s an option, not a target.