Foundation slab settlement issue

[Kiran Kumar]

Hi,I'm looking into buying house with foundation slab settled and cracked on one side of the house. House is located in on the slight grade hill. Ground floor/basement portion floor has a noticeable dip in the floor and wall. Because of with there is 3 inch sloop in the upstairs floor from one corner to other. I had a preliminary inspection to evaluate the efforts and provide cost estimate to fix the issue. Just to fix and stabilize the foundation with push piers and foam concrete raiser cost estimate was $48K+. Feel like that is a lot to invest just for foundation repair. Also foundation slab seems to be uneven, looks like someone amateur poured in the concrete and dint finish it well, there is a slop in the foundation slab itself. What would be the cost to replace the entire foundation slab? I know it's very wage to provide any estimate. But I'm just curious if anyone had to go through this and learn what they did about it.