$100
Get a bottle jack $60. Get some pavers $20, get a level $20. Jack up the house next to where the stump is that has sunk, put pavers on top of the stump to the hight needed to get it level. Repeat process.
I'm raising my house eventually, but wanted it level right now while I reno it. Took me about 2 hours to get it pretty level using this method.
Or you can go spend thousands of dollars only to have to restump later on. Up to you.
And yes a cheap bottle jack from supercheap will lift up part of your house, they are strong suckers.