GemPages Landing Page Builder

Very simple to use app with lots of useful features. It basically has almost everything you'd need for a e-commerce store, and for the things that they don't have, apps are easy to integrate.

Best thing about GP is their customer support I'd say. We've had like 5 problems we needed help with so far and every time (literally) they answered in less than 30 min and within an hour or two our problems were solved.

Definitely would recommend.