First I apologize if this is in the wrong forum but I believe it's in the correct one.

Does anyone know of an eCommerce platform that will allow me to create a product page very similar to the one shown here: ?

Currently I am using OpenCart in an attempt to accomplish something similar but I keep running into problems as far as functionality.

Basically what I'm after is a platform that allows for a list of product options each with a quantity box to the side and each with different variable pricing. I also need a function that allows the price to be different based on different customer groups e.g. different prices for school accounts.

Any ideas? I'm at a loss right now.