Modular Event Cart CAD Drawings

I need a clear, fabrication-ready CAD package for a modular service cart used at events. The cart must break down completely for transport, then bolt back together on-site, with every module interchangeable... (Budget: €30 - €250 EUR, Jobs: 2D Drafting, 3D CAD, 3D Design, AutoCAD, CAD/CAM, Floorplan Blueprinting)