The one for $374.62? I would have no problem buying that. It comes with a 30 day return policy, however no manufacturer warranty. I would run some stress tests on it and play some games that are GPU heavy while watching temps and clock speeds with HWInfo or similar, just to verify everything is in working order within the first 30 days.
Should anything go wrong I have always had very good luck with returns on amazon. That card is not known for any widespread issues, I would expect it to work fine used or not, that card has a pretty good cooler so even if it was used for mining or something it was likely kept cool and it's unlikely someone would use a 2060 super for mining, there are certainly better options for that task.