I recently had an issue selling on Ebay where it wouldn't allow me to change my lowest offer price even though I lowered my base price. On a $500 item, it wouldn't let me change my obo limit below the previous amount, which was $480, so I know I was missing offers but there was nothing I could do about it. It has made me more sympathetic to denied offers close to buying price because I think they may he experiencing the same issue.