SanDisk has announced their new 2GB Memory Stick PRO Duo card at E3 gaming expo today. The card is perfect for PlayStation Portable owners who want ample storage for their videos, MP3s, digital photos, and other game data.

Expect to see the 2GB card in July for a mammoth price of $350 US. Currently you can grab the 1GB for $140, or at the other end of the spectrum, the 128MB for $40.

SanDisk continued to say that 20% of PSP owners have purchased an extra memory card, with expectations that that number will increase to 50%. With over 600,000 PSP’s in the first week of release, that’s a TON of cards. I wonder how much Sony manages to take off the top of each sale considering that the format is proprietary to Sony products.