StudioPress itself is somewhat of a niche product as it is targeted to existing WordPress users who found setting up and managing a WordPress site too difficult or time-consuming. StudioPress prides itself on being easy to use, but their main claim to fame is that their hosted websites are “faster and more secure” than other WordPress hosting companies as well as using the “Genesis framework” which is supposedly more SEO friendly than other WordPress builds.
Amazon has spent years perfecting the art of online selling and you’ll learn a lot about online marketing by observing how they do it. They constantly test different ways of promoting products and have evolved their site quite a lot over the years. See what widgets they use to promote related products, watch how they use reader reviews, and see the way that they describe products.