Memory is pretty much ten to a penny these days.
If you're going to be getting a 5mp camera, then why not simply get a bigger card. mymemory (
http://www.mymemory.co.uk/ ) is a good place to get cheap memory, and at £17.99 there's no excuse not to fill your boots. I got a nice 512Mb memory stick for my camera from there for only £23some thing including s&h.
Just avoid places like Dixons, Jessops, Argos etc - they have incredible markups on the prices of their memory and you'll be fine.