Hi, I am still using 2.x version of qc and happy with it, just that currently i need a minor modification. Some products will have the price 0.00 and instead of diaplyng the price it shoul display a custom message. The other products that have prices abobe 0 should diplay the prices only the products with 0 price should display a message like : please contact us.
I am not sure if anyone will support you with QC 2.0 (5.0 is now in the works) so if you write to my email, we can solve it together. I will then write solution here.