Go to a regular auction, and watch people get whipped up into a frenzy, overpaying for the goods, they will pay the cost of new goods (or more)
for used merchandise. The key to any auction is knowing when to back off after it reaches the max price one is willing to pay for it.
P.S. If it hits 1/2 of new price, its past time to be considering buying new,w/ wear, no warrenty, not worth it, IMO.
Another thing about regular auctions, it's sometime fun to watch people buy goods they cannot use, was at one for a retiring EC, they were buying 8'strips for $10 ea (new) the problem was they were 277V.