I've been trying to find out all day how to buy and use DNF$ from DNF not the users

I want to change my name to my domain name site from my video company

I read a thread where it says you can do that with DNF$, but I see no where to order a name upgrade or purchase it, I've asked a few times today in other areas but no one seems to be able to answer it

sorry to bother you guys/gals

but if anyone can point me to where to order a name change upgrade and where to buy dnf$ from DNF, I would appreciate it

THANKS