Authorize.net payment gateway system is among some of the most popular payment gateway systems in the world. You can not directly purchase the service from Authorize.net as it is only available through resellers. In order to get the best deal you need to choose the best Authorize.net reseller and who can be a better reseller than the one who provides you for free. Capital Merchant Solutions Inc is a an Authorize.net reseller which provides you free Authorize.net account with every merchant account you purchase from the company. The merchant account service from Capital Merchant Solutions is also very reliable.