It is not unacceptable to have to jack a old home. All structures will settle. While it is better corrected then left alone. YOU NEED TO GET A INPECTION DONE! Make sure they were only correcting normal settlement and something more grim is not lurking that may break almost any budget. Are the floors leval now? Do the doors close correctly? How bad are the cracks in the walls? GET A INSPECTION to help be sure. Then don't count the house out if it is major but make sure you know about what it will cost to get things straightened out if needed. Good Luck! Hope it turns out like you want.
The house seems to be in excellent condition for its age, but I’m not familiar with construction standards. There is only one ‘vertical’ crack on a wall on the second floor, but it goes from the middle to almost to the top of the wall. Anyways, I truly appreciate your advice, and I will get an inspection done.