I bought a 4gb memory card from this ebay shop for £9.99 + £1.95 delivery and it came within two days. I'm not sure where you are likely to buy from but this guy was fine and I had no problems and arrived in two days - Zoom H2 - in case it's useful.

Lowden thanks for the tip on the case I could do with one

Here's a little six minute demo of extracts of 15 songs and tunes I've put together that was recorded on the Zoom H2 for our band as we needed to get something to someone for a potential gig at some speed! Not unhappy with the result. Put together using my other favourite program - Reaper

Six Minute Demo of Eric Pope and The Cardinals