Ebay upper control arms

I saw several ads on Ebay with them after I searched. None of them say the same as the QA1 arm ads. The QA1 arms are advertised to give about 3 more degrees of caster. The unbranded arms just give some bullshit sales pitch. I would assume the generic arms are QA1 knock offs, with all the same features, but I'm not gonna assume with 200 bucks.