For its newseltter members only, newegg offers the Microsoft Comfort Mouse 4500 5-Button Scroll Wheel Mouse in White, model no. 4FD-00016, for $19.99. Coupon code "EMCNBGJ66" cuts it to $7.99. With free shipping, that's the lowest total price we could find by $5 and the best price we've ever seen for any 5-button scroll wheel mouse. This wired mouse features five buttons, vertical and horizontal scrolling, and BlueTrack technology (which allows for tracking on most surfaces).