This is a Pearl stencil kit from the mid 60s, judging by the lugs on the tom. It is maybe Pearl. Star did not use that particular lug design, they are "stubby" in comparison to the Star lugs. This kit is certainly over-priced at 500. Should have been closer to 250 to be inline with MIJ prices. Sorry to say it, but as L-D stated, this is an expensive lesson.
Maybe the seller would put it right, but I highly doubt it. As for quality, they are decent. You can tune any drum to sound good, but head selection and tuning are going to be your key to making them sound great. As for the mis-matching tom, I have seen many of this era Pearl stencil with mixed lug design toms. Good luck with them!
EDIT: OK, after closer inspection, this appears to be a completely mixed kit. The T-rods on the bass look to be Star, as well as the interior of the bass painted grey. Te floor tom also apears to be Star. The small tom and the snare, however, look like Pearl. I will need better close ups to be certain of anyting on this one. As soon as you get it in hand, get some pix posted for us.