We want anyone to be able to install, understand and manage his own access control system personally and professionally. So it's cheap, by design. Leosac is open source (AGPL license), works with open source hardware (BeagleBone Black) or communities approved hardware (Raspberry Pi): don't be stuck with deprecated and unsupplied systems anymore. You can even Do-It-Yourself. Whatever you're an individual with one door or a company with hundred doors, you will use the same components. Only number of components and configuration differ.