What if you used shape ways to build the buildings then create resin molds from the positives and cast the rest at a cheaper cost? I bet you'd be able to sell a lot more of them.
It is a sound Idea In theory but to costly for me to invest into the process. $40 for the model, $I5-35 for the latex for the mold, another $50 or so for the frame and resin. Easily talking over 120 in supplies for just this one peice. Granted same cost as buying 3 of them and yet you could make more with resin. My problem is the fact I dont want to do this with just one model but them all.
The plan is to save up for a 3D printer and just produce what is needed. All those resin molds would need more space than what I have. In the time a resin casting would need to safely cure a 3D printer could make multiples on the same model with out the oder or the chemical clean up, plus the ware and tear on the molds etc... Cost wise going this route would be at the very least 40% cheaper than shapeways.