Hi, I'm a design engineer and have experience in 3D modelling for over than ten years. Most of my work is in automotive field that requires high accuracy and high surface level. Create 3D data from images, sketches, and or ideas is one of my prime job. Please see my portfolio for details.
I can provide You 3D modelling as exact as the source images, to meet Your requirement.
My software did not support for OBJ file format, but I will convert it to IGES, that very common file in 3D Data for You convert to OBJ file.
The price that I proposed is $700.00 with time estimation in 10 days.
I'm willing to do some test. I will send You my work first, so You can evaluate my work, and if it meet Your requirement, then we can discuss more further.
Thanks.