A certain other auction site has the option for sellers to extend the end time by, from memory, 2 minutes. When sellers came to the boards there asking for advice because they were not getting bids they were told to stop using that facility and their sales usually improved (not to anywhere near the ebay levels) I used to do reasonably well on that site, if things didn't sell on ebay I used to send them over there as listing was free but once ebay started reducing listing fees and then giving free ones away I stopped using that site as sales had dropped to almost zero.