My preference is lot by lot but I understand the drawbacks to it. I wonder if a hybrid system would work. AH software should be able to determine if a bidder has been active on any lot in the last, say, 15 minutes. Any one lot could close if all the bidders on that lot hadn't bid on any lot in the last 15. The countdown clock would be reset for each lot as an initial bidder bids anywhere. I think that solves the problem of being able to bid elsewhere once you lose a preferred lot. Make sense?
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