It was constantly getting etched and stained.

Also looking around ceilings, windows, and lights to see signs of water damage (brownish stains). 

Evictions can be nasty and stain the relationship so only do one if you have to.

I prefer sealed and/or stained concrete. 

Lots of urine stains from pets which the smell caused us to depart after 2 min (I worked at a animal shelter, been in a room with 40+ dead cats but the AC was working, this condo was up there being vacant min 8 months)My agent's rehab estimate is $40K, I'm overshooting to cover bad pipes, interior beams need to be cut out and replaced, new hvac, etc so $75K. 

No fences to have to upkeep, a basic deck on the back of them, all concrete stained floors, wooden cabin looking walls so no Sheetrock or paint to be done.

If not at least you are a stain on their credit they will need to explain when trying to get a loan and you are increasing their rates.  

Hi Brie-In my experience, some of the stains will come out, but not all.  

For example, I have had people say that Kool Aid stains are normal wear and tear.

True the before pics did seem like the house just needed a clean, however it did not show the gouged and peeling engineered flooring, stained carpets, beat up walls and bad paint.