Went hunting for a 512mb Duo Pro yesterday. Jessops wanted £70, Argos £130, nothing in the UK on ebay. Eventually settled on this store: http://s1.amazon.co.uk/exec/varzea/ts/my-zshop/S2DASA585NO7RZ/026-8352419-5414006 Card cost me £37.49 with about £4 for 1st class recorded. It arrived this morning, had a free jacket for devices that like the larger sized Memory Stick & works fine. Just thought I'd pass on my good luck.