Take my advice, pass on this property.
If the areas around it are going for less, and the property is missing appliances, theres no telling what else was taken.
The biggest concern I always share with properties missing appliances, is is it also missing its plumbing? That easily walks you into a hidden 10-20k cost off the top, and the house is already over what would be its FMV. (Fair market value.)
Additionally, houses lose value over time, they dont increase in value. Anyone who believes that is mistaken. What increases in value is the land itself. The house, and the materials it is built out of degrade over time, which is why you are able to amortize the decrease of the value over time, as well as make money by donating parts of it out if you want to "decomission" the house(s) you have as I call it.
Have an appraiser go out and assess the value of everything, and then find out how much the area of land goes for in that area for a comparible size.
Take that, and add the assessors total value of the house. Thats what the house is ACTUALLY worth at the moment FMV.
Then take that, and subtract all the costs of replacing the appliances, the roof, and all other repairs. Thats what its actual worth is in its current condition.
Obviously, you never pay what its "worth" because thats not profitable. Add a margin of profit that you want to make, and offer that. If they dont accept it, walk. run. Just get away from it.