Adding a MarketPress Buy Now button to existing WP site.


I’d like to add a buy now button using MarketPress to an existing WP site.

Example is here:

I would like to have a Buy Now button for each size of bin linked to a MarketPress product which when they click on the button will take them to the cart with the bin type in the cart.

Is this possible? I can install MarketPress on these sites but want to do the Buy Now button with minimal changes to the existing sites.