koesterbuilding on "Want option like [wp_cart_button name="Test Product" price="29.95"]"

Hi,
Ours is a website that offers option to chose different designs, colors , shape and size of printing materials and based in selection, price is calculated. So we cannot simply fix the cost of a product.
I need an option [wp_cart_button name="Test Product" price="29.95"] as given in simple WP cart.

Please suggest how can I achieve this?

Thank you