While CB might have given up doing price trend news stories, 3D Center are still at it:
https://www.3dcenter.org/news/news-des-2223-januar-2022
Not sure if averages of all cards is such a useful metric, but that's what they are doing.
They also have a % for each card:
-15% improvement for the 3060 since the 2nd of January. Still 188% of the MSRP though.
Lowest Mehrpreis (literary more+price) percentage are the pre-scalped cards: 6500XT (pre-scalped and got very poor reviews although AFAIK still none in German as AMD didn't sample a single German review site), and the 3080Ti. As for not being ripped of, then the 6900 XT is only 143% of it's MRSP. But then it was released at $1000.
What the chart fails to show is that at release the 6600XT was actually available for £329 at least for a few hours. That price seemed pretty poor at the time for such a small 128-bit card. However, with hindsight...