can a seller receive multiple best offer before the listing ends

[maplelf]

can a seller receive multiple best offers before their listing ends?

[reallynicestamps]

Only if she has Best Offer enabled. It is not 'eBay legal' to make or accept BO without the option.

A member can make up to three BOs on a given listing.

A Seller is not required to accept any of them and is allowed to ignore the offers.