Im looking to buy a wing for my 03 A4. Im looking for just the little lip for the trunk. I found some on ebay for around $50 but that seems to be cheap for what im thinking. Any help would be awesome!

 

If I were you I'd use the term spoiler instead of wing. Wing just sounds like you plan on putting some giant ricer wing on your car. What you are looking for is a lip spoiler. There are a few on ebay that look decent but as you said, I worry about the quality. ECS tuning has a couple on their site. Of course they need to be painted so a $29.99 spolier may end up costing you a bit more to have painted and installed.