OfficeDepot.com has the following:

http://www.officedepot.com/offers/save.do and use code "10853472" to activate the $15 off $50 coupon (EXP 09/18/03). Then search for "673618" to find the Microsoft Wireless Optical Keyboard Desktop for $62.84. Add to cart. Your total is then $62.84 - $15 off - $15 Rebate (EXP 09/13/03) = $32.84 with free shipping

$15 Rebate

http://rebateimages.teg-online.com/66625.jpg