Give it about 6 months. When the AI bubble bursts and data centers get shuddered RAM will be back to affordable prices. Maybe lower. I got 64GB of DDR4 in this workstation so I am good for the foreseeable.
When I upgraded my main Thinkpad 13 months ago, I first considered of putting in 32GB, but the price difference to the max 64GB was negligible. I had just gotten into 3D scanning and lots of memory is always a plus. Buy once, cry once, I thought. Little did I know.
€207 for the whole shebang at the time, today's price: €523
Ouch, what a jump in price.
The $189 64Gb DDR5 kit I have in my rig is now selling for $787 last time I looked.
In other news I have invested in a heavy duty surge protector and am looking to replace my UPS.
Both of those items are a good investment.