This deal has ended.
Overstock now has inventory of refurbished 4gb iPod Nano in both black and white for $169.99. This 12% off coupon for new customers (there is also a 10% off for returnees) cuts the price to $149.59 plus shipping is free through 12/31. But the key here is sales tax (Overstock doesn't have any, except to IN & UT) because Apple.com has them for $149 but they charge sales tax to most states. The 1.5oz. Nano holds 1,000 songs.