Hi,

i use auto reject accept for best offer, but occasionly check to see how many offers have been made on listings, yes some are riducously low, but often after 3 goes, they do buy it at the asking BIN price, so definetly would not block buyers due to overly low offers, also the more offers on a item, even if way to low, increases that items visibily to others, and increases chances of selling that item, also if there are no offers on a item, usually means no interest in that item.