It's quite likely that many sellers don't actually have the stock they claim to have and relies on getting them elsewhere in case a large order comes through, w

It's quite likely that many sellers don't actually have the stock they claim to have and relies on getting them elsewhere in case a large order comes through, which incurs an overhead. My experience in online retail is limited to electronics but this kind of inventory inflation is extremely common. Apparently book sellers do this as well. http://www.michaeleisen.org/blog/?p=358 http://www.michaeleisen.org/blog/?p=358