The page required as much room as possible without being 10 miles long, which is why many elements are on click and popup into view when more information is required. This allowed the site to seem to have minimal content and be very easy to navigate and purchase items, as well as being able to view as much information on the product.
I love the site, it really looks great and is so nice to look at. Nice work!
With a limited product basis the single page website is a very nice way to keep things short but sweet and still provide everything that is needed to present any information required for your business or products.