There's been significant stocking issues on PC components since the pandemic began and thus prices have gone all sorts of crazy. You absolutely shouldn't spend that much on an RX 5700; the performance isn't remotely there to justify that price.

$290 + tax, and $30 back for reselling Borderlands, so effectively $260. BL3 was only a few months old but I think the value was tanked a bit by being an Epic Store key, it was free so I can't complain.

The launch prices were $350 for the 5700 and $400 for the 5700 XT (after the pre-release price drop response to Nvidia), so $260 was $90 under list price, or 25% off.

And really, even finding a GPU for list price instead of being marked up for mining ethereum (or whatever else) was a bit of a miracle compared to the last few years of GPU price insanity.