Over the last couple of months I've become and e-Bay addict...(step # 1, admit your addiction), I've bid on purchased over two dozen knives and multi-tools on e-Bay, NIB and used. I've received them all and with the exception of one guy who sent me a trashed used knife (he described it as "in good gondition"-since it was a CRKT M-16 12M for $12.00 w/shipping, my exposure wasn't much).
As I just posted, I just picked up 28 Victorinox SAKs for about $ 5.00 ea., I dunno what condition or even what they are since they were listed as assorted, large Victorinox knives.
But as long as you're dealing with a reputable seller and you use reasonable precautions, the chances of being burned are minimal.
Now does anyone know how to break this viscious e-Bay addiction ?