OK, I'll try to explain why the price is quoted in Dollars and not pounds.
The device parts are all charged in dollars by the people who make them. That means, IF we quote a price in pounds, lets say £15, we are at the mercy of the $/£ exchange rate. For example, if the exchange rate dropped, we would be able to buy less components for our £15, perhaps not even enough to make the board. However, since we quote an overall price in $ we can always ensure that our target price is sufficient to build boards whatever the exchange rate does.
It also means that there is only one currency conversion needed, that at the point of sale, for whatever currency the board is purchased in.
So, given the quoted price of $25 for the Model A (which hasn't gone in to production yet, but will soon), convert that to £ at the time of purchase using the exchange rate at that time, add VAT and p&p, and that is about what you should pay.
Hope that helps.
Principal Software Engineer at Raspberry Pi (Trading) Ltd.
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