What is this?
The following items are just Joomla articles in "Article - Blog View" mode with number of colums set to 1 with QuickSell file attribute selected and price set.
You are getting all the benefits of Joomla articles and their functionality and settings, along with meta keywords and description, the ability to load other modules in the article body, the caching and speed, along with the QuickSell order buttons, the file preview and the shopping cart.
Long story short, you have complete control of the look and feel of these items, enjoying the benefits of your optimizations / design you already use. This way we ensure maximum compatibility with site templates.