8GB Vita Memory Card for $10, 16GB for $20 at Amazon.

[kupomogli]

16GB shows $38 but open it and then on the right side where you can purchase from other sellers, click add to cart for Amazon who's selling it for $20.  It's out of stock, but you can still order it.

http://www.amazon.com/s?ie=UTF8&field-keywords=8gb%20vita%20&index=blended&link_code=qs&sourceid=Mozilla-search&tag=mozilla-20