Perhaps Amazon know where you are from? (^_*)
Pasta, log onto your account. If it is showing the correct welcome messagei.e. Hello "pastafreak" above Accounts and Lists then look at the little flag to the left. A U.K. themed site will show the Union Jack and American based site will show the S & S.. Click on the flag and in the drop down menu you will be given options to set/reset your currency and Country/Region. Click on and reset even if they are showing £sterling and the Union Jack.