Сомневаюсь. Они привлекли к фиатному шлюзу компанию Simplex (провайдера для покупки крипты с использованием кредитных карт)
Эта Simplex взимает 5% с платежей. Вот выдержка о комиссии у них на сайте:

We charge 5% of the transaction cost, with a minimum amount of 10$. Depending on which of our partners you are using to make your purchase,
the fees may differ.

Why 5% you ask? Well, our service is made up of two parts
a) credit card processing: the fees for this are very standard for the industry
b) fraud detection and mitigation: this is a special service that allows merchants to sell crypto-currencies online with credit cards. Without it they wouldn’t
offer you that option, which as you know is the cheapest and fastest way to make payment (compare the time and cost to doing a bank transfer!). 
Fighting fraud is a non-stop and expensive business, so we do add fees for that too. We think that keeping the overall cryptocurrency ecosystem online
free from fraud is worth it.