I made a best offer on an item (approx 10% below the listing price - item was around £150). Rather than decline or make a counter-offer, the seller just let the offer expire. It's slightly put me off making a second offer or buying the item at full price as it suggests less-than-great communication to me, but am I overthinking that? It's just that I almost always get a counter-offer if my first offer isn't accepted, it seems strange just to let an offer expire.