I manage an antiques and design store in New York. We are looking to create a website to enhance our sales. The inventory consists of several hundreds of unique and constantly changing items. I am trying to determine whether I should create a dynamic webpage using PHP and MySql or through HTML5? We are looking for a very simple design that focuses mainly on photographs of items and simple/intuitive navigation.
Also, in order to accept credit cards through our webpage we must establish an online merchant account, register with authorize.net and purchase an SSL certificate. Is this correct? Am I missing anything?