I hope it's ok to show this eBay auction:
This one makes me sad to watch. I just saw this auction on eBay. No one has bid on it yet as I'm writing this. The seller has a 100% positive rating with 24 feedbacks. He has an eBay "store." The buy-it-now price of $199 is a decent price for this ZIF. They go for a little more usually.
Now note: This is a one-day listing. Click on the seller's feedback. Note: The seller has been an eBay member for only a week. The seller is in Malaysia. Now especially note: all of his 24 positive feedbacks are from sellers, not buyers, and all are either private auctions or "one cent" auctions.
As I'm writing this he has three other one-day listing auctions that end in 6 hours. People are bidding away on those. I cringe and want to message those bidders and say, don't you see the big red flags? Of course, I won't, and I guess, no one should. Maybe it's all ligit. Maybe it isn't. But it's a shining example of how 100% positive feedback can mean absolutely nothing.