Haha good ol KR. But like a few other of his articles, I agree with this one.
I typically assume the following on ebay:
1) unless there are many large, clear, and detailed photos of the actual item offered from multiple angles, you may safely assume the seller is trying to hide some shortfall or defect about the item condition and lying about it in the item description.
2) if you see it for $X on ebay, chances are you will be able to find it cheaper elsewhere. Only buy off ebay in times of extreme circumstance (need a hard to find item RIGHT NOW) or if an exhaustive and thorough web search (including specific forum classifieds such as those found here or FM, etc) has determined that ebay is the only possible source.
3) If you have not been monitoring the status of auctions on ebay for two weeks or more, you're going to overpay for the item (see #2 above about needing it RIGHT NOW).
4) If you've resorted to looking on ebay for an item, and are actually considering purchasing, stop for a moment and think about how badly you really need it. Often times better value may be found in purchasing an alternative, more widely available item (such as a slightly newer camera model than the "ebay special" that costs a little more money, but will have much greater overall value)
Basically, 99% of the time you're going to get ripped off (in the sense that you got suckered to overpay, not in that you got scammed of your money) whenever you buy from ebay. As long as you're okay with this fact in exchange for a little bit of convenience, then it can be used as a purchasing resource. But if you're actually looking to save money and/or hassle, don't count on ebay anymore.