This page demonstrates how you might use NiftyGridZPro to create a simple mini store page for your site. For a full-blown one, check out our Superheroes Storefront (it has no sidebar to maximize available space, as well as other ways of letting a visitor interact).
Maybe you’ll want to organise things so you have a page per department or perhaps organizing by store category suits you better? Maybe a mixture?
Whichever approach works best for you, NiftyGridZPro has it covered.