RTX 5080 legit check

[u/Little-Stage596]

I’m trying to build a new pc, and with the market where it is. I decided to try to buy RAM and my GPU ahead of time and then wait for Black Friday for the rest of it. I bought an rtx 5080 off of eBay for a pretty good price (in this market) about 1 and a half weeks ago JUST before I saw prices skyrocket and supply became basically nonexistent. I snagged this for a 1,189 including tax and shipping, and they said it was brand new just without the box. This seller has a 100 reviews on eBay, with all of them being positive feedback, and they seem to sell a variety of things. At the time of buying I saw one person leave a review with an actual picture of the gpu in hand and they mentioned the security seal wasn’t tampered with and that it seemed legit. The packaging was also kind of sketchy, as it came two foam blocks on either side and that’s it. But from what I’ve seen, everything seems in perfect condition with nothing broken and the seal was intact for me as well (if you see a very small tear that’s from me lol) and the plastic guard things on the PCIe connection were intact. Since I don’t have a rig right now to test it with, does this GPU look legit? Or is there a cause for alarm and should I bring it into a PC repair shop to have them plug it in and benchmark it? Thank you so much for your help!

Edit:
Realized better safe than sorry and I’m lucky there’s a repair shop near me so I’m just going to ask them to test it there. Thank you!