the imports are cheaper than domestic

ordering two CDs from amazon.co.uk:

Delivery Method: Standard
Delivery Preference: Group my items into as few deliveries as possible
Subtotal of Items: GBP 14.45
Postage & Packing: GBP 4.07
------
Total before VAT: GBP 18.52
VAT: GBP 0.00
------
Total: GBP 18.52
Promotional Gift Certificates: -GBP 0.00
------
Total for this order: GBP 18.52
Payment Total: USD 29.11**

ordering them from amazon.com:

Items: $48.96
Shipping & Handling: $3.97
Super Saver Discount: -$3.97
Promotion Applied: -$0.00

Total Before Tax: $48.96
Estimated Tax: $0.00
Order Total: $48.96

I save 40% (almost $20) by ordering from amazon.co.uk. even though I live in the US. go figure.