It's too easy to relist the ad with just the push of a button. The relist button should be disabled after being used five times. Five relistings means the item has been showing for more than 15 days. If it doesn't sell within that time frame, it is most likely priced too high. After five relistings, a rewrite of the ad should be required to keep it on the site. At least, it would give other members something different to read.