Originally Posted by
Jigain
Standard Edition: $59.99, £49.99
UK VAT: 20%
$59.99 = ~£38 (£38.1578)
£38 * 1.2 = £45.6
49.99 / 45.6 = ~1.1
Difference: 10%
Digital Deluxe: $79.99, £64.99
UK VAT = 20%
$79.99 = ~£51 (£50.8538)
£51 * 1.2 = £61.2
64.99 / 61.2= ~1.06
Difference: 6%
Collector's Edition: $149.99, £129.99
UK VAT: 20%
$149.99 = ~£95 (£95.3844)
£95 * 1,2 = £114
129.99 / 114 = ~1.14
Difference: 14%
The UK pays 10% more than the US (based on a taxation equivalent to the UK for US purchasers) for the stadard edition (digital), 6% more for the digital deluxe edition, and 14% more for collector's edition. Not quite as much as the numbers you cited.
As for why, I can't say. I'm an author, not an economist. Nor do I know much about taxations and sales in the UK. But looking at the numbers, the differences are nominal.