Gold Level Pricing $500 for Serial Number and the membership. (S/N priority) Serial Number is nonrefundable. S/N is Transferable to Platinum Level registration for $4500 using a 3% cash discount available. This membership allows for the average builder to start building the project. this gold level membership allows for entry level cost with minimal risk while still building a substantial portion of the aircraft. It also allows the membership fee to be applied towards parts and materials should the builder elect to upgrade to the Platinum level.