Above Sat Nav system comes with latest map guarantee which basically makes it a TomTom 530, use code FSD2 and get free delivery. + you can get approx £5 quidco back
as your given the latest maps guarantee i dont think you will find a better deal, these are refurbished units direct from TomTom themselves and come with a new cover and screen, so they are virtually new and come with a full 12 months warranty
you also get a free hama carry case too which is worth £19.99
also you get 12 months ticket 2 drive giving discounts on leisure & attractions etc..