I have a basic design template already (so you won't have to design it from scratch) from which I need four unique variants. I will pay 100 USD per model sheet featuring top, side, and front orthographic views. Highly polished, finished work is not necessary; I am only trying to lock in canon models from which later work can be based, so flat coloration and basic shading is fine.
Some design context:
I'm looking for something more in the visual direction of BattleTech than Gundam. These mechs will be kaiju sized and the last remnants of an ancient, dead Martian civilization. This civilization was utilitarian, oriented around martial honor/discipline, and human; their design should reflect these human sensibilities. In addition to being planet-threatening weapons platforms, they were seats of institutional power; each was piloted by a member of the Martian high ruling class (for example, one of them was the emperor's signature mech).
Digital media is fine, I don't need anything on paper or canvas. Deadline would be within a month after contracting. This is currently a non-commercial project.