Woot.com has 2 512mb Memory Stick Pro cards for 17.99+5.00 shipping today as their 2 for Tuesday sale.
I've been using the 32mb Pro Duo from my PSP with a small adapter that came with a 2gb card I purchased a while back. It works fine, but I'm a little squeamish about inserting and removing it from the Reader too often. These should more than cover my memory needs.
