Popped into my local Tesco in South Wales today and there were loads of reduced price computer stuff. D-link routers, ADSL and Cable version for £35.97. Worth checking around might not be a one off store.
Other stuff they had reduced:
Philips SN6500 wireless router £35.97
D-Link PCI adapter £15.97
D-Link PCMCIA card £15.97
D-Link DI-634M Cable wireless router £35.97
D-Link DI-624m ADSL wireless router £35.97
Philips 80GB external 2.5" HD £39