But all the funds that flow through it get paid out as salary before that happens. wholesalers though will not give a rip about any of it as long as they make their fee. thats the reality. 

So before you get ready to attempt to rip your Landlord a new one, first go take it up with the local taxing authority, then go have it out with the insurance industry, then gripe to the neighborhood HOA (if applicable), then maybe settle your disputes with Home Depot/Lowes and any and all trade contractors.

But in many cases that simply does not happen you get bad actors and they rip the rents ( because the loan is not in their name etc). 

I have a duplex where the plumbing was getting backed up.Had a plumber go out there and put a camera in the lines and turns out there are roots growing into the plumbing from a nearby tree.The quote to rip out and replace the plumbing was a staggering number.My thought is to cut down the tree to stop the growing and then eventually put the liner in the plumbing.Any experience with this?

More people get ripped than make money.

We tried them when it was time to sell mom's house and they offered $50,000, saying how they'd have to rip out everything. 

such as rip off!). 

Like when I didn't pull permits, I had to rip on the cabinets and tile and then abate asbestos that was under the kitchen floor tile. 

. $1,520.00•Demo about 12” of walls and rip out entire shower pan and step •Install cement board on exposed wall •Apply RedGuard and Waterproof membrane to shower pan and up the exposed walls •Install new drain adapter in shower floor •Install new tiles provided by client Optional (just in case fixing shower pan does not fix the water leak) rebuild shower. costs extra $5100•Demo shower • New plumbing for a new fixture •Install cement board on exposed wall •Apply RedGuard and Waterproof membrane to shower pan and up the exposed walls •Install new drain adapter in shower floor •Install new tiles provided by client •Client provides plumbing fixture

That comes when you've started looking at properties you could actually buy and you start over analyzing because you're afraid to pull the trigger.I experienced this in a different fashion when we bought a property and we were gutting our first kitchen and I didn't want to pull the trigger because I was a little afraid of just ripping everything out and what would actually happen.