https://pcpartpicker.com/trends/price/memory/
The same site also has price trends for CPUs, video cards, etc.
Most people will pick a ram spec and buy whatever is the cheapest kit for that spec at the time.
I think the best data view would be what is the cheapest available kit for each spec over time rather than the average price of each kit.
Something that skewed the market in the past, which is unrelated the the reasons the market is skewed now doesn't make a compelling comparison.
The reasons would lead to differing levels of market skew.
Obviously this depends on where you live.
Realistically people normally buy whatever ram is the cheapest for the specs they want at the time of purchase, so that's the realistic cost increase IMO.
I cancelled my plans to upgrade my workstation, as the price of 256 GB of RAM became ridiculous.
https://www.bestbuy.com/product/crucial-pro-overclocking-32g...
That 32GB for $274 was not $34-$45 in the summer. RAM is up like 3x, but RAM is one of the cheaper parts of the PC.
RAM that was $100 in summer is like $300 now when I look. So that's an extra $200 maybe $300, on say a $1500 build.
GPUs are not up, they are still at MSRP:
https://www.bestbuy.com/product/asus-prime-nvidia-geforce-rt...
SSDs are up marginally, maybe $50 more lets say for a 2TB.
So from summer you are looking at like a $250-350 increase on say a $1500 PC