Not sure if I'm allowed to post this sort of content... this isn't an attempt to spam or anything of that nature; I just know that with the current limitations of the Gateway, spare micro SD cards are always a plus.
2 8gb Micro SD cards for $10 shipped
http://slickdeals.net/f/6356950-2-pack-of-8gb-toshiba-class-4-microsd-memory-cards-10-free-shipping
2 8gb Micro SD cards for $10 shipped
http://slickdeals.net/f/6356950-2-pack-of-8gb-toshiba-class-4-microsd-memory-cards-10-free-shipping