This deal has ended.
Buy.com has the Crucial 2gb Micro SD Card for $17.77 after a $20 mail-in rebate valid through 89/2. This is both a Micro SD and a regular-size Secure Digital (SD) card when used with the included adapter. Shipping is free and there is no sales tax (except CA, MA, MD, TN). New customers can use this $5 off $100 coupon and new Google Checkout users can get a $10 off discount for signing up (but you can't get both).