What is the best purchase you ever made on eBay?

Not sure what category this question belongs in. If you can't name one purchase, then name three by category. Example: I bought a 1960 Stingray for $8,000 on ebay motors, or I bought an antique doll for $40 that was a collectible in mint conditon, only it wasn't listed as a collectible. I has since been appraised at $4000. Stuff like that. What's the best purchase(s) you made?