From the document.................................
"The FAA notes, however, that those model aircraft operations that do not wish to comply with a community-based set of safety guidelines and operate within the programming of a nationwide community-based organization will be able to simply conduct their operations under part 107. Part 107 was designed to impose the minimal burden necessary to ensure the safety and security of a small UAS operation. As discussed in the Regulatory Impact Assessment that accompanies this rule, the out-of-pocket cost for someone who wishes to operate under part 107 will be less than $200.