Call for Artists, Making Money at Juried Art Fairs, Craft Shows and Festivals
You might want to check out: PaylineData they have very good rates, legitimate banking company with merchant services. Real people answer the phones, quickly.
The vast majority of people use Debit instead of Credit. Instead of paying a high rate for Debit, the Debit purchases are charged a much lower rate in processing fees. Their processing fees are tied to the current banking rates.
Whereas, Square and many others give a flat rate for transactions whether they be Debit or Credit.