A step back from Macromedia's online store
_the EU has 10 major languages, 4 major currencies ... the costs of doing business in European markets are significantly higher per unit of revenue than in the US._
So does the UK subsidises the translation of the software, documentation and country-specific marketing when we could just have the US version as is? The International English edition of Photoshop still has the Americanised 'color' in the software and documentation.
Also, regardless of the local cost of printing packaging and all that, we should still be able to buy from the US store in US$ and have our local tax applied depending on the cardholder's address. You can, after all, buy a download version that doesn't incur anything beyond hosting and - optionally - purchasing a backup CD and documentation.
The Macromedia store used to work that way for DevNet subscriptions and individual packages; I bought a subscription a number of years ago as well as a copy of Director. US prices saved me several hundred pounds, but I was still - with good reason - charged VAT at 17.5%
A message regarding a US/Worldwide English upgrade being compatible with the International English editions of Studio 8 and earlier Creative Suites - sent over a week ago - still hasn't garnered a response from Adobe.