3D Model Creation for Printing

I have a concept that needs to be turned into a printable 3D model. The job is straightforward: produce a clean, moderately detailed digital model using AutoCAD (or a compatible tool) and supply it in a print-ready format... (Budget: ₹600 - ₹1500 INR, Jobs: 3D CAD, 3D Design, 3D Modelling, 3D Print Design, 3D Printing, 3D Rendering, AutoCAD, CAD/CAM)