Boots have just started a promotion giving an automatic 15% off a total spend of £85 or more. You can combine this with other discount vouchers to bring the cost of the Nano down by another £10. I would imagine the stock of these will disappear fairly quickly.
Boots advantage points of £3.96 plu 3.5% Quidco bring the price down further.
Ipod Nano 3rd Gen 4GB Nano Silver. Now the world's most popular music player lets you enjoy TV shows, music videos, video podcasts and more. iPod nano's larger, brighter display means amazing picture quality. In five eye-catching colours, this one Silver, it's stunning all around.
EDIT - Automatic 15% discount applies to a spen of £80 or more.