Did you know that picking up payment processor is much more complex than it sounds? Many payment processors have several different plans. For example a charity will have lower fees and transaction costs. A high risk merchant may have to pay thousands of dollars in fees just to process payments. This is not a transaction fee this is an upfront fee. Many processors do not allow common items such as knives, guns, adult material, profanity, anything that could be considered violent or discriminatory. This is not all of the things that are not allowed. For a full list you would need to check with the specific merchant processor that you were considering.
Many merchants also offer API integrating assistance. Some charge for this assistance while others offer it for free.
You should always be sure you read your contract and thoroughly understand it before making your selection. Also remember to ask questions. The only dumb questions are the ones that were never ask.
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