As was pointed out earlier in other comments, Google generally uses a 1:1 convention for USD->GBP for pricing. (This 1:1 generally accounts for minor f/x fluctu

As was pointed out earlier in other comments, Google generally uses a 1:1 convention for USD->GBP for pricing. (This 1:1 generally accounts for minor f/x fluctuations and for customs duties for importing goods into the U.K.) GBP 500 x 120% = GBP 600 (rounded)