The Visa and Citizenship Pricing Table can help you calculate the cost of your visa:
For comprehensive information about visa application charges for all types of visas, please visit the Australian Department of Immigration and Border Protection website. See: www.border.gov.au/Trav/Visa/Fees
Information about making payment at the AVAC and their logistic fee are detailed here.
Please note that all credit card payments are taken in Australian dollars and incur a 3% surcharge. DIBP is not liable for any currency conversion or other fees your bank may charge you in relation to the transaction