Ethereum is using Gas Price & Gas Limit to calculate the cost of a transaction
The higher the Gas Price you sent the faster transaction will be confirmed,
Imagine Gas Limit is like a fuel tank in your car, while Gas Price is price of fuel / liter . The higher octane of your fuel, the faster your car moving forward.
When you sending ethereum to Blokmy wallet , we recommend using https://ethgasstation.info/ to calculate your Gas Price and Gas Limit
When you sending ethereum out of Blokmy wallet, Blokmy's Algorithm automatically calculate Gas Price & Gas Limit and ensures that your transaction is confirmed < 1 minute