ADCMS - I get what you are saying. It seems pretty clear. Quoting them not actual cost, but what something theoretically would cost if you had Satans people build it, is not honest. It is however interesting that the homeowner in this situation could make out like a bandit.
I guess it would be too much to ask for that person to donate some back to the branch (for materials), and then take everyone that worked on the place to dinner, and then maybe the rest given to a general fund for the community. :) Wishful thinking you say? Yeah.....wishful thinking.
As far as the assembly halls go, I think you are forgetting the very clear expenses. There are four. Electricity, water (those toilets don't flush themselves, supplies (paper towels, cleaners), and the poor sap who lives on site making sure the place isn't molested by non-believers when nobody is looking. He makes a couple hundred a month right? So yeah, 16K sounds about right. Lol.