Some ecommerce systems offer automated transaction processing while the customer waits. Others offer manual processing, which collects payment information for later processing by hand. Real-time processing is more expensive and typically only required in high volume systems or for products distributed electronically, such as documents or software downloads. This system may be incompatible with your current or planned hosting software or other ecommerce applications. Check with each MAP to ensure its software is compatible with your ecommerce system.
Some MAPs make quite a killing out of unexpected costs, contingency fees, and penalties.
An Internet discount rate is a fixed percentage taken from every online transaction, usually two to three percent. If you are going to sell many low-priced items through your site, high transaction costs can be devastating. Monthly fees and minimums. This is a variety of charges levied on a monthly basis, including statement fees, monthly minimums for total charges, excess usage fees, and others. Holdbacks and chargebacks.