These cards can not be mainstream if they charge for each withdrawal.
Withdrawal fees will never be eradicate in ATM's because its the way we pay the bank for "using their atm". Some bank withdrawal fees are minimal and there are some also which deduct a huge amount in to your debit card. So better choose an ATM with lesser withdrawal fees. Centra dont have the capability to stop this ATM owners in conducting such fees but instead Centra offered a free service which converts our Cryptocurrency to Fiat Currency easily.
So, how would one know about ATM with lesser withdrawal fees? Will there be some kind of guide provided by centra? I'm planning to invest but want to be sure about the service first.
As far as I know the ATM will tell you first what's the withdrawal fee before you will be withdrawing your money. It basically depend upon the ATM owner/bank how much this will cost.
As you can see in the whitepaper, $2.50 is the average fee per withdrawal but this is subject to change on the ATM where you're transacting your withdrawal
But no worries..
Centra cards has rewards programs which make it interesting and unique to use their card
For more info regarding this matter feel free to read the whitepaper located here: https://www.centra.tech/CentraWhitePaper.pdf
P.S this is not official statement from the team, this is my opinion only from what I've understand regarding using the card. Centra tech team member may be able to explain this much clearer later.
Thanks for clearing up the doubts.