My 1TB SSD drive is running out of space and im doing some shopping. Given the ridiculous current prices for both storage and RAM, I was wondering if I should invest in 2TB or assume that due AI capex things will only get more expensive and 4TB SSD would be a good long term buy.
I recently purchased an old Dell T420 with RAID adapters for my old HP server drives. Now I have a couple dozen free TB for less than $300USD. I know the IHG chain has a four year refresh period and they have a lot of old unused equipment - because that is where I got my drives.

Warning! Indexing activity wears down SSDs fast. RAID gives you the same capacity and lets you use older equipment. You can also download a post-index build somewhere and save the seek abuse on your shiny new hardware.