Currently I am using http://www.ecb.europa.eu/stats/exchange/eurofxref/html/index.en.html http://www.ecb.europa.eu/stats/exchange/eurofxref/html/index... And t

Currently I am using http://www.ecb.europa.eu/stats/exchange/eurofxref/html/index.en.html http://www.ecb.europa.eu/stats/exchange/eurofxref/html/index... And there is some degree of variation between different sources, for example this is the NOKSEK exchange rate from yahoo. http://query.yahooapis.com/v1/public/yql?q=select%20*%20from%20yahoo.finance.xchange%20where%20pair%20in%20%28%22NOKSEK%22%29&env=store://datatables.org/alltableswithkeys http://query.yahooapis.com/v1/public/yql?q=select%20*%20from... And since the variations between sources is limited I believe that getting a rough idea of the rate (which differs from bank to bank as well) Is beneficial especially in currencies like NOKSEK where the difference can vary between 0-10%