Hi Matt,
wow, those are a lot of products!
Is the banner under the header going to be a sliding gallery style design or fixed?Just showing 3-4 offers maybe? Just thinking out loud! 
The only other comment for changing I would make is the header is too busy. I'd move the search bar to above the green 'Free delivery" image on the right of the page. In it's place I would make the phone number much bigger.
Are you able to give an example of a product that you think isn't 'buyable'?
cheers
Daiana
