This deal has ended.
Sports Authority has 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 (buy something cheap like these socks for $4.99) you can get $10 off by using Google Checkout, cutting the price of the Armband to $19, effectively. Also, shipping is currently free (it is usually not) and there is no sales tax (except KY, PA). Nike products are usually excluded from coupons but do work with the Google Checkout promo.