Update: It seems that Gamestop is offering the same same sale. They also had the 32 GB memory card on sale for $40 but as of right now the stock is sold out.

Online retailer Amazon is currently housing great discounts on the PS Vita memory cards. Most notable is the 16 GB one, which is selling for only $19.99--a 67% price drop from the normally $59.99 card:

The 36 GB memory card is selling for $75.06; the 4 GB at $13.25 and the 8 GB at $18.30. These deals are pretty great so if you needed a memory card for your PS Vita, now's the time to buy.