I've been searching for a 32M RAM module for the Z50 for a little bit now.
 I have a working z50, so I don't want to have to buy a whole new one on
eBay.

In case someone else is looking: MemoryX in California sells modules they
say are compatible, but they aren't, as the notch on the card is offset
just enough to make it not fit.  I've dug up a few other vendors that have
it listed online, but none of the ones I've contacted have it in stock, or
are out of business.  Anyone seen any 32M modules lately?