Discount Rates and Per Transaction Fees.
Generally the most important items to consider are the discount rate and per transaction fees. The discount rate is the percent you are charged for each sale that is processed. This rate for a "swiped" card is usually around 1.59%. When you use a card and it is a "non-swipe", the discount rate is about 2.29%.
Both a swiped card as well as a non-swiped card will be charged a transaction fee. Per transaction fees are in addition to the discount rate mentioned digital payment processing agent above and generally range from $.10 to $.99. A frequent misconception by merchants is that they think if they have a lower discount rate and a higher transaction fee then they are getting a better deal. This is not necessarily the case, so you should do some math to see which will be better for you. If the majority of your sales are less than $20.00 per ticket, then you should negotiate a contract with a higher discount rate and a lower transaction fee.