Oh dear. I didn't have that happen. Mind you I am using an old debut theme which I haven't updated to the new one, simply because mine is full of customisations.
I think when I changed mine I didn't use comments, I just deleted the cart and price section. Because it was a new product template it was fine doing that. It did not affect my 'for sale' products. Heres the collection I assigned the new template to. You can see no buy buttons and no prices. Its an information only listing highlighting customer reviews.