There is the issue. I can't put the minimun price at zero. I want leave free the minimum price. The idea is the buyer can download the product for free or pay what he want.
If you put 0 on the name-your-price space, the page don't accept it, and reclaims a price. I check the 0-0,0-0,00 and nothing.
Also, if I put the product for free directly, you cant add it in the basket. Always required a minimun price up to 1.