They can't print the envelopes cheaply enough to make it worth while, so I would still run the envelope through the printer.

The classic example of this is "a printer".

We're buying a $93k printer to get more mail out the door, and this is nothing compared to the printers the big mail houses use. 

Depending on how bad it gets the fed will step in and fire up the money printer, of course that would be after a big bank fail and/or massive layoffs.

The gantry-type printeres are costly and hard to transport, so I was considering robotic arm types.

We've debated adding a printer station to our units because it would be awesome if we were traveling to have the ability to print where we were staying. 

Links to your three other posts on this same topic so readers can see what's already been discussed:https://www.biggerpockets.com/forums/61/topics/551577-backyard-homes-produced-in-chinahttps://www.biggerpockets.com/forums/617/topics/551580-china-built-backyard-homes-socalhttps://www.biggerpockets.com/forums/61/topics/537480-tiny-homes-produced-in-chinaThis sort of house is an interest of mine, though I'm more interested in building them on-site with a 3D printer and local materials.  

They will normally charge you for desk space, using their printer, support from them and their office staff, Etc....Then there are MLS fees, Lock Box fees, Continuing Education costs, and the basic costs of running your own business.

This all came from a computer, printer and Internet access that was my startup cost never thought about it that way before, but yeah, thanks for sharing.

There is 0 reason anyone should ever faxI don't even allow printers in my office.