They are not vita memory cards but they are generic memory cards that work with the vita. The 16 gig one is 12 bucks and there's an 8 gig one for 8 dollars.

...I didn't think that any generic cards worked on the Vita?

The last time I went to Big Lots I remember them selling these hilarious bootleg Street Fighter figures, so I can see this happening.

They dont. Magicgate only