Some lots in the catalogue might say quantity x bid amount.
It is important to note that this DOES NOT mean you can bid on JUST ONE item in the lot. You are bidding on ALL items in the lot TIMES your BID AMOUNT. The items in the lot are all sold together as one lot.
You see this very clearly in red font "By bidding on this lot you commit to your bid x ..." with the bid button indicating "Place Bid! x.." or "Change Bid! x .."
What this means, for example, when a lot has 24 chairs, and it says "Bid! x 24", is that your amount bid will be multiplied by 24.
i.e. if $1 was placed on the lot which is 24 x quantity, you are effectively putting in a total bid of $24; if $10 was placed, you are effectively putting in a total bid of $240.