Are they bi-xenon, i.e. have a shutter that alters the lens from dipped to main beam? If they are, they look quite nice, although you won't know what the quality is like or how good the beam pattern is until you get them and fit them.
Depending on how far away the seller is from you, I'd want to go and collect them in person. Or like me, not bother and make sure that my next car has OEM ones.