Here's an ebay search string you can use for gold earrings. Just copy it into the search window, then use the "advanced" search function to enter your price range. You can also choose to look only at "buy it now" earrings. Good luck!
(This search string will filter out a lot of the faux finishes, but there will still be a few that slip by, so read the descriptions carefully and beware of any fancy terms that and product names that basically mean "gold coated" or "fake diamond")