24-04-2017 11:16 AM
If you list as an auction with added BIN, the BIN is disabled as soon as you get a bid. Otherwise you could have a winning bidder and somone buying it at the same time. Adding a BIN is only an invitation to buyers to skip the bidding process.
It costs 50p to have both. So either use BIN on it's own ( with best offer option if you wish) or simply start your auction at the lowest price you would be willing to accept.