The one's at the box stores are inexpensive and easy to install and the new good looking  heavy glass one's have to be professionally installed (pretty much) and are very pricey.You can just put up a clear plastic liner if you want the bathroom to look a little more finished for no money and the tenant  can put a decrotive one over it if they prefer.I guess the glass door are a little better at keeping most of the water off the floor but most people do alright with the shower curtains.

Looks better than plastic shower walls.

I do a lot of 3D printing in plastic, and when talking about using it for home construction, I have doubts if it will ever go mainstream for the fact that when dealing with 3D printed concrete, you are talking about an incredibly rough surface finish, that then must be finished.

All of the plastic on the roof was damaged, except the AC cover. 

Not brain surgery just hard work.

I understand your concern I was sweating it myself because my wife has had 4 surgeries in five month and now is fighting phunonia and I'm 60 years old so who is going to hire me I'm a liability so we live off of her disability and it's tough

They would know if the area where your house is located has aggressive enforcement of permitting.Much like getting a dentist's advice about your hip replacement surgery.  

From 1960-1980's cast iron, steel and plastic in the house, cast iron & plastic outside.

Metal rather than plastic hoses to connect all plumbing (washer, toilets, sinks, etc.).

Growth Unlimited Ltd. makes me immediately think of botched penis enlargement surgery.