BeachCamera has the Sandisk 8GB Extreme III SDHC Memory Card (20MB/s) for $41 after a tiered $20/$50/$90 rebate when you purchase 1, 2 or 3 cards, making them $21/$16/$11 each respectively. Rebate limit: 3 submissions up to 3 cards each per home (total = 0 cards). If purchasing multiple cards, be sure to order them 3 of the same kind at a time.