Amazon.com help!

[ChrisDilke]

So I've just ordered a Blu-ray from Amazon.com that was priced at $14.99, and when paying in GBP came to £10.24 (£14.67 total with standard shipping and handling added). Since that's within £15, I went for the cheaper shipping option. However, now I am seeing two different prices. When I go into My Account, my order is listed at a total price of $21.47, though the order details (and the invoice email I received) still have the price down as $14.99 (£14.67 total). Which of these two is correct and should I be worried about facing additional import charges, even though one of these prices confirms that I've kept within the limit? I realise that I might well just be getting worked up over nothing but I just want to be sure.