I am an international product importer and exporter between many countries. I have to convert currency for my invoices (although most prefer U.S. dollars or Euro). I used this Easy Currencies software for a day (it gives you 7 day evaluation) and it is excellent as it gives you all major conversions in one easy to read vertical table. It uses up to minute conversion tables to do so. The problem is I already do this at: http://www.x-rates.com/calculator.html. While the web converter is slightly more difficult to use, it is also free. There are dozens of other excellent Free conversion sites available also. The one I listed is my favorite.

I strongly suggest the developers price this product at $9.95 or less or they will be giving up many sales.