> Last year you could buy a AI Max 395+ with 128G for 2.5k, now it's almost $4

Only if you pay the Framework premium.

https://www.bosgamepc.com/products/bosgame-m5-ai-mini-deskto...

I don't have access to the USD price, but it's 2500€ (tax included), up from 1600€ in November when I ordered mine.