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.
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.