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What does the displayed currency signify?
From Wiki.zanox.com
The currency is displayed for information only.
The Euro is the official currency for zanox.de AG. You can change the currency to be displayed at any time in "Profile" > "Contact information". Because all currencies are rounded to two digits after the decimal point, there may be slight discrepancies between the currency displayed and the actual Euro amount. For example, if a click condition is listed at €0.01, the click value may be displayed as 0.00 for another currency - while in reality it is 0.00432 in this currency.
The currency is displayed together with the associated exchange rate. This is always up to date (current or last workday). The exchange rate corresponds to the ECB's ROE.