Do I have to purchase the Buddypress "Product" theme to use it?

I wonder if someone can tell me, within WPMUDEV there are buddypress themes which initially appear free to use but on another page appear that you may have to pay to utilize. For example, the buddypress PRODUCT theme i can download and install but I am also having some trouble configuring certain sections. Can anyone tell me if I need to purchase this theme and from there I have to enable a plugin or activate it or other, then I can work with it?

any help appreciated

laurence