I made $22 by accident

I'm not going to go retire, but I just made $22 by buying an all black Vestal Crusader, receiving it and realizing it wasn't the one with the silver strips on top and bottom, deciding to sell it on eBay, and doing so. I bought it for $28 on eBay and just sold it for $50 (plus shipping). I can't explain this. Oh, well. I'll buy another watch, I guess.