Sketch-to-3D Print Model

I have a single-view 2D sketch of a figurine that should stand somewhere between 10 cm and 20 cm when printed. I only need the core shapes translated into a clean, watertight 3D model—no elaborate textures or fine engravings, just smooth, well-proportioned geometry that matches the drawing... (Budget: $30 - $250 USD, Jobs: 3D Animation, 3D CAD, 3D Design, 3D File Scaling, Slicing & Print Preparation, 3D Modelling, 3D Print Design, 3D Rendering, 3ds Max)