32MB for your Amiga for 22$ ?

[DamageX]

I'm guessing that there is more demand for a Zorro 3 RAM card than Z2 or A1200. Since Z2 cards are relatively cheap and common, and the A1200 expansion port is often used for an accelerator (and both have limitted address space). Take a look here:
http://www.thule.no/haynie/zorroiii/docs/zorro3.pdf

I bet you could avoid the autoconfig stuff and put the memory at a fixed address (or have a choice of addresses by jumper setting). Then run a utility in startup-sequence to add the memory.

[DamageX]

Quoting The Master and writing this in one and the same post - you must be out of your mind...  
The Autoconfig logic is very easy to do.

LOL, well if we're already considering pseudo-SRAM instead of SIMMs or DIMMs then I say leave no corner uncut.

Z3 RAM boards: they're slower than onboard RAM

If I'm not mistaken (no, I did not read through the whole Z3 spec) a Z3 board COULD be as fast or faster when taking advantage of faster memory. A3k/A4k onboard memory is 80 or 100ns right?