When you purchase digital assets using ‘Buy’ in your RockWallet, fees will be charged to cover transaction and mining fees. A 3.75% credit card fee and a variable mining fee will apply to transactions using a credit/debit card. Mining fees fluctuate based on the asset you are purchasing. Mining fees will be shown on the 'Order Preview’ page before you confirm and finalize your transaction. Credit card and mining fees are charged in USD for ‘Buy’ transactions.