And why? I would think the market for vintage audio is small that it's best to have a 30-day listing to find an interested buyer.. In seven days how can one be sure a buyer will notice your listing? Plus seven day auction has other cons: 1) Many people won't bother bidding on an item that already has a bid. Why waste time when someone else will likely win it 2) Who has patience to wait 6+ days to find out you won/lost 3) Sniping is also very annoying. Many mass collectors use automated tools for sniping. That is a turn off for average joes looking for a good deal. I would think the end result of all this is that 7-day auction shrinks your market and lowers your selling price..