I've had situations as already mentioned where I've indicated to a seller that I'll take an item only to receive a sold notification several days later. Could Bikehub possibly create and regulate a kind of offer button where the person who meets the price first gets an automated first dibs. The seller is then compelled to sell to the first person that meets the asking price. Also, others potential buyers could be notified where they are in the queue of potential buyers who have already met the asking price. Consequently, people's expectations will be managed.