Anyone requiring PS/2 SIMMs can get various types (2 to 32 MB 60/70 ns, EDO/FPM) for FREE from me. PM for postage from Germany.
I've also got tons of 1 MB 30-pin - 4 MBs are out, sorry.
@Nathan
The ZIPs you're offering are - as you can easily see - 4x 256k = 1 Mbit chips.
Surely that's "128 KB" but that won't take you anywhere by itself. 16 bit machines need sets of 4 for 512 KB RAM - as stated - and 32 bit ones require 8 chips for 1 MB.