But for whatever reason i have this mental blockage in my head that “I am taking advantage of the poor people by purchasing their property pennies on dollar,  I just feel it’s not right”.Can somebody please help me getting over this mental blockage ?

I had only one plumbing problem over the years resulting from the blockage of the overflow pipe in the tub causing an overflow.

Depending on age, it could be clay, which is particularly susceptible to breaking / blockage.

How would that fix a blockage, and how much might that cost?

To test that, you actually have to run water for several minutes down the drains and make sure it doesn't back up, indicating a blockage (tree roots, pipe collapse, foreign objects, bad vent, etc.).

Late applicants: I will wait 10 minutes to allow for them not knowing the roads and getting lost, or getting held up by a traffic blockage.

Its been helpful for clearing my blockages.  

However, the wipes caused major blockage. 

For example, my lease says that "The tenant shall be charged for repair of drain blockages or stoppages unless caused by defective plumbing parts or tree roots invading sewer lines."  

He said this is no big deal and will evaporate on its on.I had him suck up the water with a vacuum and it amounted to .5 cup2) He said its possible that there is a blockage in the common drain pipe that connects the whole building (3 story condo, ours in the middle).