It'll likely be a wash on the sale price, meaning that's about what it'll fetch us on the back end, but it'll help the house stand out from the crowd, sell faster, etc. 

In most of the flower beds I have put down landscaping fabric and 3/4"- 1" washed river stone.

His "claim" was he couldn't let the house burn down and there be no coverage.

This requires a lot of trust that the 'company' can remain liquid & solvent and not be prone to corruption.

I couldn't even get a word in to tell him what it was (he sounded like he really didn't know,  but saw that it was some " bs papers").

Installation requires primer and solvent cement.After looking at the code, it seems schedule 30 thin wall complies with the IL State Plumbing code for it follows the standard  ASTM D 2949.  

What was he talking about? 

It's all about the multiple little things that can add up to big things that affect the cash flow.If a seller has substantial equity in the property and they do not want to hold a second that can often times be very telling that they want to wash their hands of the property.

We also need to do something with the steps, possibly carpet them.Other stuffI purchased an ozone generator to mitigate the smoke smell and washed all the walls with TSP twice.

A good bleach scrub, pressure wash and stain or seal the deck will take care of the problem.