When you sign up for an Advanced Account and choose the Authorize.net option you will receive two separate charges each month. One charge is from MerchantPlus for you actual merchant account which includes your statements and PCI services. The other charge is directly from Authorize.net, we are a re-seller of Authorize.net which means you are getting the gateway at a discounted rate of $9.95 through us. Even though we set up your gateway, Authorize.net is a separate company (gateway) that is linked to your merchant account with us. They take care of their own billing which is why you see a separate charge.