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thanks for the comment.
you can contact with the support and check with them if it is "real service"
some of my friends try it out and it's work just perfect for them so because of that i post that tutorial,
i will never post it if i don't know in 100% that's a good service.
you can check the exchange rate your self, take your USD value and multiply it by the steem value, you will see if the exchange rate is good enough for you.

Seems to me their steem rate (to buy) is 25% higher than binance's.

if I'm correct I don't think binance accept credit card, am I right?
the rates will be higher because you buy from a credit card, this is my opinion at least

Right. Apparently there's a fee for comfort.

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