a couple of years ago i bought genuine rotors from Berry's, about 90 each for fronts if i recalll. they would be more now. i have a set of non genuine rears in the workshop, again they were not hard to find, Berry's had them in stock. as above, try rda or your local brake shop. they are out there.
btw, the min thickness should written/stamped/cast be on the rotors somewhere.
also, avoid genuine pads, very dusty.