3d printed robot bust

We need a a bust a of a robot modeled. We're going to be doing a resin mold, so we need the 3d printed model to use to make the mold. It will be done in 4 pieces, and each piece will need a square peg / hole at the connection points. Will need a mockup of the whole thing assembled too. Don't know my budget, mostly because I don't now how much this kind of thing costs, but very open to discussion. Rush job if possible.