There is a set cost of USD 2.99 for using an ATM, unless the withdrawal is performed in RUB, in which case there is no fee. In nations where standard ATM machines only allow modest withdrawals, the fixed charge structure may be problematic (USD 20 for instance). In such cases, if you want to withdraw a bigger amount, you'll have to withdraw many times, each time triggering the fixed charge. In most cases, though, you may go to a bank to withdraw larger sums more quickly.
Bitcoin is supported by Advcash. As a result, if you need to convert any other cryptocurrency into ordinary purchases, you must first convert it into Bitcoin.