Sorry, missed them.....
One thing that perhaps should be clarified, there should be no duty on books from the States, costing less than Â£42,@ $80 and no VAT, as books are zero-VAT rated in the UK. You will possibly pay vat on the shipping charges.
It is a good time to buy from the states, given dollar/pound rate.... have just bought the Santillana Venini book, for $40, Â£21.60 including shipping.
Also better deals available on Amazon.com:
The Deboni is $35 inc shipping, but Â£29.99 on Amazon.co.uk, so worth checking out for other stuff, as is www.bookfinder.com
, and seeing what US dealers have that currently is a bargain.