@Anish Patel 6K for hollow doors?

The tenant may not want to leap-frog the PM anyway since they have a lease agreement with them and it would violate the lease terms.

Around here, basic hollow bedroom doors are dirt cheap, and there's almost always someone selling or giving away one on Marketplace for next to nothing.

The floor is wavy with dips and a little hollow in places, there is no crawl space which would indicate the house has sunk over time and there is wood rot under all the floors. 

And probably this is a ton of money to them.. this is why wholesalers who claim they are some do gooders just rings hollow.. so take the 5k  make the seller happy and all is good..   

Also, the high cost of living commercial urban areas are being hollowed as economic viability all around the nation declines. 

Oh, and that the MDF *WAS* the support post - that's right, someone built hollow-box mdf posts and decided they would be excellent structural members to hold up an integrated 34' porch roof.

As for the doors getting ripped off the hinges, do you use standard hollow core doors?  

If you reach people that do not want to sell below market value I don't give a frogging frog how many offers you make, you won't get poop accepted!

That is my "boil the frog" type of example.