£250k isn't as bad as I'd imagined in fairness.
If you based it around the figures I used previously of £52k for a traditional build, say double the £10k for that Russian bungalow to get a 2 storey house at £20k if you're using the big 3D printer and you've paid it off in 8 houses, maybe need a couple more to pay for some training off staff or whatever but it's a pretty quick return when you've got companies capable of churning out some big developments.
Could be a useful altenative for smaller projects like housing, imagine it could get a bit tricky if you're building something bigger and relying on several of these machines to construct different parts of it simultaneously with it all coming together as it progresses. I'd be interested to see it done, see what requirements they'd need on site for it to be achievable, what sort of conditions they can work in, working space that's required, etc. We used to have an estimator at my old work who was always dead keen on pushing new products when he was pricing jobs but he never gave any consideration to how it was actually going to pan out on site, whether we could source staff that were familiar with those methods, how they interracted with other elements of the building and such, his consideration was almost always exclusively price driven. At times he was so passionate with such obscure things that I was convinced he just had shares in some of these companies so he was determined to do everything he could to get them to site whenever he could.