I generally use the UK based site as most of the CDs reviewed within these pages are either UK bands, or readily available in the UK at a decent price.
Postage rates are also pretty reasonable.
To see if the title you are looking for is stocked, then try the search feature. There are literally thousands of tiles of CDs, videos, DVDs, and books. It is maintained in association with Amazon.co.uk. Any purchase made as a result of this link is purely between yourself and Amazon.co.uk. It is also suggested that you use the link above to make best use of offers or special prices that might be offered via this link by Amazon.co.uk.