Boy am I feeling this. I had my eye on building a new Threadripper machine, which requires DDR5 RDIMMs. Much to my surprise while happily building out a parts list one fine evening I learned that these are going for between $500 and $1000 for one single 16GB module right now. I think I'll hold off and squeeze a few more years out of DDR4 and PCIe 4.0.