This deal has ended.
Buy.com now has the 1gb Kingston Secure Digital SD Memory Card for $44.95 before a $40 rebate valid through 3/3 cuts the price to $4.95. Plus, shipping is free and there is no sales tax (except CA, MA, MD, TN). The 2gb Kingston SD Card is $9.95 after rebate. Of note: first-time Google Checkout users can sign-up and get an additional $10 off discount.