Seems like you'd have to do a ton more then just 500 posters a month to justify a machine that could do that much cheaper.
We get 27"x39" 100lb gloss posters, 500 for ~$1.75/ea
As I mentioned, we currently have a 72 uvr that we are running hard but needs to be replaced in short order. Just trying to get a feel for the economics of newer printers and what to expect for "hard" production costs. If we could move some work in-house it would help pay for a new unit.
We could use a good outsourcing partner if anyone is in our vicinity. We are in Northeast Mississippi.