Well, I'll be sure to keep an eye out for your auctions then...in order to avoid them...
Seriously, though...how on earth are your games getting so scratched? Almost all of my games are 99% perfect. I mean, I can grab any Dreamcast launch game from my collection and it will be flawless. What do you do with your discs?
Honestly, not including that information is a very dis-honest thing to do and would seriously piss me off. While this is a little more extreme, a friend of mine purchased a copy of Klonoa on eBay. The seller claimed the disc was in good condition...but that's it. When he recieved it, there was no manual and the disc had a massive Hollywood Video sticker plastered over the top of it. Sure, the disc wasn't scratched...but the package was total shit. The seller totally failed to mention any of this.
Oh well, I generally avoid eBay altogether for this reason. Most people just don't take care of their stuff, so I don't trust any of the sellers.