If memory prices have you down, here's a great deal, 32 kilobytes ought to be enough for anyone, and $649! Fully configurable with DIP switches. Socketed DIP memory chips. Compatible with any computer with a S-100 bus. You can even use this to run the CP/M operating system.

https://en.wikipedia.org/wiki/S-100_bus

#Vintage #RetroComputing #Altair