Kingston 4GB Secure Digital SDHC Memory Card for $8 with free shipping, a great deal at a cost of $2 per GB. Only works in Secure Digital devices with SDHC compatibility, which is pretty much most cameras these days.

Also a similar deal, a Kingston 2GB Secure Digital Card for $6, also a great deal at a cost of $3 per GB. It will work in just about every Secure Digital device and reader, even old cameras and readers.

Photos taken in 5 and 6 megapixels consume roughly 1.5 MB each, and 10 megapixel photos around 5 MB each, so a 2GB card can store somewhere around 800 to 1300 high quality photos, 4GB around 1600 to 2600 photos. Actual photo storage varies greatly by camera settings and photo quality.