Product Base Currency Magento Extension
Allows to input product prices in the original currency. Administrator will be able to change and save base currency for each product separately, so that it becomes possible to manage prices basing them for example on manufacturers’ or suppliers’ prices. Adds extra price attribute for Price, Special Price, Tier Price, Group Price. Once the base currency changed all the others currency prices, tier prices, group prices, special prices are being recalculated according to the currency rates.