This deal has ended.
Dick's Sporting Goods had the best deal yet on the Nike+ Sport Armband (this is the perfect fit for iPod Nanos using the transmitter from the Nike+ iPod Sport Kit). It is $29 but if you spend $1 more (here are some cheap examples) you can get $10 off by using Google Checkout, cutting the price of the Armband to $19, effectively. Also, shipping is now free and there is no sales tax (except CA, GA, KY, MA, PA). Nike products are usually excluded from coupons but do work with the Google promo.