32GB Samsung waterproof Class 10 SDHC for $23 (no limits)
Amazon herself is offering the 32GB Samsung waterproof Class 10 SDHC memory card for $23.30. Shipping is free if the total of your order is $25+ or if you are a Prime member. The card has 41 customer reviews with an average of 4.6 out of 5. You can buy as many as you like at this price. There are no limits (within reason).