A good converter. It has two main advantages – speed and savings. The exchange, including the money transfer, takes up to half an hour. They offer a decent commission for miners, so if you need to quickly acquire cryptocurrency, it's worth a try. The rates are generally acceptable, but not for all directions, so it's better to check the monitoring sites. When I exchanged Payeer for Ethereum, the rate was excellent. However, buying Dogecoin with Sberbank turned out to be unprofitable. There are no hidden fees within the exchanger, but pay attention to the payment systems, as they may charge a high fee.