@sean
No, the card you posted from eBay will not work as memory. You need an SRAM or PSRAM card. They pop up on ebay periodicly, so keep checking. Also, Software Hut (
www.softhut.com) gets them every once in a while.
I have a 4M card and together with the Elbox 1M Chip RAM upgrade makes the A600 quite usable.