Be your own boss and become a mailbox storeowner. Complete turnkey packages start at $78,900. Mailbox, Print and Business Center Developers offers a standard package for $98,900 and a premium package for $128,900. You can speak with the development team for your best option. Candidates are asked to have a minimum of $30,000 in liquid capital. Mailbox, Print And Business Center Developers will provide counseling, service and support.