This function:
GOOGLEFINANCE(("CURRENCY:EURAUD"))
works well in Google Sheets, I have searched the web up and down for some documentation regarding this function and how it is used, the closest I've got was this
http://www.google.com/finance?q=EURAUD
Does anyone know how to use this one? or where to find documentation regarding this function?
The specific instructions for what you are looking for are in here: https://support.google.com/docs/answer/3093281
Remember your Google Spreadsheets Formulas might use semicolon (;) instead of comma (,) depending on Regional Settings.
Once made the replacement on some examples would look like this:
=GoogleFinance("CURRENCY:USDEUR")
=INDEX(GoogleFinance("USDEUR","price",today()-30,TODAY()),2,2)
=SPARKLINE(GoogleFinance("USDEUR","price",today()-30,today()))