GPU resale in this economy is no joke. The offers are all over the place, and some sites make you jump through a million hoops just to get a number. I tried
https://mygpuprice.com/ last time I was selling, and while it didn’t solve all my problems, it at least made it easier to compare prices without the headache. You still gotta hustle, but it helps trim down the process a bit if you're in the market.