The T & D rockers are in the $2850 ball park. The Jesels are in the $5k ball park. There is alot of machine work in the Rocker bodies. Multiple set-ups and fixtures. They are nothing like a BB rocker. I attempted to reinvent the wheel and come up with my own system and after two vendors and almost two years of issues, I pulled the plug. Plus, I also realized they would cost more than the T & D's.