Just perusing HobbyKing today, and spotted they are selling a whole load of LiPos cheap from the UK warehouse that are marked as 'Scratch/Dent'. The description says they were used in a photoshoot, and the photos (actual batteries supposedly) show them to be in excellent condition. Many don't even have connectors on so not even used once. No warranty, so that's a negative.
http://www.hobbyking.com/hobbyking/store/RC_PRODUCT_SEARCH.asp?strSearch=scratch%2Fdent
This is a 'once they're gone, they're gone' offer, so probably best not to hang around if you're interested.