That's impressive what your client did. 

If you have an ADU on your property, it's super easy to find out approximately how much you can take out through just a few clicks with only a soft credit pull...A side note: the founder of Figure.com Mike Cagney also founded Sofi and they got pretty some impressive investors.

I will say the power of leverage is impressive.

Should I go to the electric company and see if they just wrongfully are charging me this or is the landlord illegally renting me a commercial zoned house as residential, and who is responsible for paying the commercial zoning electric deposit even though we were always under the impression this was a residential lease?

I was tempted to call the owner and let them know the realtor wasn't showing the property to all interested buyers, but decided to just let it go.Of course I have no idea what the real story is, but my suspicion (at least my impression) is that the realtor was playing games and maybe had a friend she would have preferred to score the property.

I have yet to be impressed by a realtor.

Overall they cancel each other out and creates the impression of a pretty flat market.

I was under the impression that a LLC tax status is to "flow through" directly to the owner(s). 

I'm very impressed that you've already got 5 properties!

I haven't followed Grant too closely, but I have heard a few podcasts, and the impression I get is that he thinks his way is the only way, and anyone who goes a different route is an idiot.