quote:
Shouldn't ebay show $51.68 if that was the last, if unsuccessful, bid?
No. The reserve price was more than 51.68.
Your bid of 51.68 was sent, but still didn't meet the reserve. The next highest bid was 20, and one increment above that is the displayed 20.50.
The current winning bid only jumps to the reserve price once it is met or exceeded. Before and after that, prices are displayed as they would be in an auction with no reserve.