Ecommerce engine for micro site
I have an app which is nearly ready to go onto the App Store.
What I need is a micro site which has a list of plans that the user can download into the app, the plans are simply Json with the extension ttt that my app can import.
I'd also like it of the user could buy plans, once purchased the download becomes available. Or for a recurring fee the user could have access to all the new plans and any existing plans and an extra section of the site.
Ideally I'd like to use something that was 90% there and loose s few features than develop the thing from scratch.
I've looked at Wordpress but didn't really like it as its design seems a big backward to me.
I'm not scared of learning rails or node or js or anything like that but would really like something off the shelf.
Has anyone done something similar ?