Are you sure the new one on ebay is OEM. There are plenty of parts out there that are factory replacements for CHEAP, but they aren't OEM. They might be perfectly fine and they might fit like crap and require a ton of work to get ready for paint. Who knows?
I had to buy some parts for mine earlier this year and saw the cheap new ones on ebay, but ended finding a deal on what I needed off a salvage car.