Hello,
Thanks for your feedback and we will pass this on to our development team for consideration, but since we don't actually handle any of the money for any orders it is not something we could really get involved with. Your payment processor will automatically handle any currency conversion between the buyer's currency and what you have set for the given products in your cart.
They've already instituted the necessary infrastructure to do that, so any conversion rates we displayed before checkout would be redundant and also run the risk of returning a different result if we failed to keep up with the processors who are already handling the different rates of currency conversion.
