This deal has ended.
Today only, Buy.com has the Logitech MX 610 Laser Cordless Mouse for only $25.95 after a $20 mail-in rebate. Plus, shipping is free and there is no sales tax (except CA, MA, MD, TN). New Buy.com customers can use this $5 off $50 coupon and new Google Checkout users can get a $10 off discount for signing up (you can't get both). This is $15.95 with the Google Checkout discount. Other stores sell this for between $41 and $75.