BTW I think you are interpreting the statement wrong. They don't get to charge whatever they want -- they are saying,
"The winner of the auction receives the sole rights to pull all parts he or she chooses, for no more than the amount of the bid"
They are saying you can take EVERYTHING if you so please and will only have to pay the price you bid, but you can also take less than everything. The statement is simply saying they cannot charge you any more than the winning bid to take everything.