The Great British Bookshop operates exclusively in British Pounds (GBP). This means that all pricing is initially set in GBP, and when customers from other countries wish to make a purchase, the prices will be adjusted accordingly. Specifically, a percentage is added to the original cost to cover necessary taxes and import duties that may apply to overseas orders. This additional charge ensures that international customers are aware of the total cost involved, which includes potential fees imposed by customs or local tax regulations. After this adjustment, the final price is then converted into the relevant currency.