Apple.com again has inventory of factory reconditioned 4gb iPod Nanos in white, which they recently reduced from $169 to $149. Both black and white are available in the 1000-song iPod. These have the same 1-year Apple warranty that new iPods do. Shipping is free; sales tax is charged to states with retail Apple Store locations. For reference, new 4gb iPods are $199 at Apple.com. Also, consider both the Nike+ iPod Sport Kit (which only works with the Nano) and the Nike Sport Armband, both of which I own and recommend.
No longer available