Pet peeve. A bass (or whatever, really) is listed for sale with a price and "or best offer". Let's say it's listed for $700, and I offer $600. Then the seller declines my offer without making a counter offer. So I try again... I offer $650. Again, the seller declines without a counter offer. Really??? Why even bother listing as "or best offer"? Just make it a firm price! UGH. Drives me nuts, and it happens surprisingly often.