I bid 800 bucks on a domain at an expiring auction and the owner renewed before the domain hit my account. Afterwards the owner contacted me directly and asked if I wanted it for said amount. I declined telling him I was actually glad I did not get it because I was drawn in at the heat of the moment.
Sometimes auctions of any sort get force you to make quick decisions in the short run that may not be the best decisions in the long run.
Lesson learned.... set your maximum bid before beginning any auction, stay focused and do not overshoot your max price on a momentary lapse in judgement. It is our desire to win that sometimes beats our rational decision making process.