Agreed, plus the seller's story doesn't really match. So apparently he just finished his 12th exams this year, wants to become a pilot (no bar the cost and employment prospects), and yet always seems to be in need of the latest and greatest (first 2080Ti, which he was selling to get a 3090 "at a good price", but now he is selling a 3080Ti?). He mentioned he needs it for production purposes, but unless he literally owns a studio or is doing insanely complex work right out of school, even then most stuff can be done excellently on the 2080Ti he "sold".
Yea I think it's pretty clear that the guy is just a reseller, or maybe someone who can't help impulse (and very expensive) purchases, what with all these stories and "details", and personally I'd stay away form the guy. Idk why but he comes off to me as someone who has a holier than thou attitude, and seems to be irked whenever someone questions him (and has some excuse always ready).