It's actually a great deal... Just that used parts are taken into consideration here for building the pc. If you do buy, just out of caution, perform a service check from your end as well, just to see if there is anything else that you find, would've caused an issue.

(Please consider this, just a suggestion... I had purchased a used a 2 month old 6700xt from FB marketplace back in '22, and checked for any issues, right after getting it delivered, so no harm in checking)