Ebay works fine. I have ebay clears all around from PCP Parts (usually a shady companY) and I did not have any fitament issues nor any leaks. My buddy with a e46 328i just bought some $65 or so rears for his car from ebay> He dint have any problems. His fronts and sidemarkers are ebay too. Worked out fine!
and if it doesnt, you only spend $65
It's worth the shot