Internet shopping is no different to mail order shopping - the same rules apply. The majority of international sites sell in US dollars. As a rough guide, dividing the price by 1.6 will give the approximate price in UK pounds sterling. Check out our currency converter for the most accurate conversions. All goods imported into the UK are subject to inspection and may be liable to VAT and duty.
Products imported via the Internet are no different to mail order and the same rules apply.
On mail order items below 18 you don't have to pay any duty. And if the package is a gift it can be worth up to 36 before you have to pay duty. Note that books are 'zero rated' for VAT purposes which means you don't have to pay tax. It depends where in the US you bought the product from, as different states have different tax policies. However, all local taxes will be included in the retail price.