
The Sandisk 4GB card, which is expected to ship this month, carries a suggested retail price (SRP) of $219.99. Other capacities in the Memory Stick PRO Duo Gaming Card line include 256 megabytes (MB)*, 512MB, 1GB, 2GB, 4GB, and 8GB.
Check out the full listing of memory cards available to buy for the Sony PSP.
The PSP uses a proprietary storage medium called Universal Media Disc (UMD) for movies and games, but UMD discs are neither recordable nor writable.
SanDisk co-developed the Memory Stick PRO format with Sony. Last year, SanDisk introduced the new gaming line of Memory Stick PRO Duo cards in semi-transparent neon colors. The new 4GB card is red.
Update:
Looks like the prices on these have dropped. Amazon has them on the cheap, including the 4GB model for less than $12.