Now that nearly every game on PSP can be downloaded via the PlayStation Store, you may want to invest in a larger Memory Stick. This 8GB Memory Stick PRO Duo is only $15 (with free shipping) atAdorama, and is quite possibly the cheapest we've ever seen a Memory Stick of this size.
Remember that Memory Stick Duos are only compatible with the PSP-1000 through 3000 series, and will not fit into a PSP Go. If you want to expand your PSP Go's internal memory, you may want to pick up this 4GB M2 Memory Stick at amazon for $16.
