If you are looking to buy a domain from an auction it would be wise to do some background checks first, one way to do this would be to install seoquake , this will give you access to alexa traffic rank,wayback machine,links etc.
be careful though the above stats can be manipulated as some domain sellers are generating false traffic by putting their domains on pay per click sites, the buyer (you) would bid up to £xxxx.xx for a duff domain with false traffic.