[jayshum]

Originally Posted by Mark17

That's what I was thinking. If the aggregate got outbid by the set bidder, and then several aggregate bidders bumped up their respective Max bids to beat the set bid, how would that be calculated?

Let's say the aggregate bid is $500k and the set bid is $520k. Several bidders of individual cards bump their Max bids by $10k, $17k, $14k, 19K, $12k... Does Heritage just bump all those bids to their max, or does there need to be a pro-rated calculation so that the new aggregate beats the set bid only by the required amount? Meaning, those individual bids don't go all the way to their max.

The simplest to do this, especially considering the logic in Heritage's programming, is this: Make it a 2-day close. The first day, all the individual lots close, with the caveat that a Set bid the following day may negate the results. This would encourage bidders to place hard bids higher than just what would be needed to be the top bidder on their lot. The second day, the minimum bid would be the aggregate plus whatever percentage it would need to be beaten by.

Apparently Mile High has run auctions like this. Does anyone know how they manage to avoid problems like this?