A 3rd party 16K upgrade of the 4K TRS-80 is listed as $140 a few pages later.
A 32K upgrade for the PET was $595
S100 16K RAM boards were $295
8 16Kx1 DRAM chips were $90
I think the 64K upgrade for my CoCo was $100 in 1983.
This same issue also talks about the revolutionary 6809 CPU, and the editorial talks about making UCSD Pascal available on the Apple II as Apple Pascal.
It made Pascal education possible for around $3000 per machine. Which is probably how Apple originally got it's foot in the door of education.
There is a machine advertised as a Pascal Computer for just under $3000.
Other compilers are just being introduced for 8 bits based on advertisements..
I'm sure home users weren't buying 64K of RAM, but schools, universities, and businesses might have.
Edited by JamesD, Thu Oct 5, 2017 9:59 PM.