I am guessing there is some fluidity between these markets. If consumers get priced out of the DDR5 market, the consumer DDR4 price increases as well. It is the same with cars, if the price goes up for new cars, it usually increases for used car market as well. Same with energy, price goes up for oil, all things beeing equal, other energy carries will increase to some degree.

Not sure if that's what you've meant...

That's it. Which is insane. We used to buy used DDR4 from obsolete servers in buckets before it was going to become e-waste. Now even that one is expensive.