Convert Sketch Into Full Floorplan

I have put together a rough hand-sketch of an entire apartment and now need it transformed into a precise, workable floorplan. The goal is to determine exactly where the walls should sit, how large each... (Budget: $10 - $30 USD, Jobs: 3D Modelling, AutoCAD, Building Architecture, CAD/CAM, Drafting, Floor Plan, Revit, SketchUp)