I wouldn't recommend going with the suggested website. It does make the whole process easier, but the fees are too high, you won't be able to attract users with it.
It seems like Binance was able to persuade them to charge as low as 3.5%, though it still has the $10 minimum.[1] Well, in the end, it depends on the OP business.
[1]https://www.binance.com/en/support/articles/360022498052Binance writes that simplex will charge you 3.5% , and when you check your btc wallet and your card you see they take 20% .