Steam goes Multi-currency – Currency conversion suspect but welcome!
After what seems like an eternity of currency conversion, hidden sales tax (WHY?!) and obscure over-pricing, Valve have now adapted the Steam Store to show & charge in the native currency of the account (on the website store anyway).
See the official forum post here to get the long & short of it, then simply click here, login (Steam now seems to support purchases outside of the program) and get buying in real money, rather than that economy-destroying fake money.
RPS have done a little analysis and price comparison, including some obvious failings in the system and surprising bargains.