I had same problem with my TomTom one v4 and found screen on Ebay.co.uk for £23 (touch screen only), but thought this was too much so had a brainwave and went on Ebay.com and found same item shipped from Hong Kong for £7. Seemed too good to be true ,but I bought and normal transaction went through Paypal and converted dollars to £. Arrived few weeks later - what a steal!!!!!!!
Bargain Hunter, November 2010