Need explanation, $40k properties selling for $100k?

[Jordan M.]

Newbie here.

I have been seeing this a lot lately on the county qpublic. These are in an apartment complex where I am looking at a particular unit for purchase. How can a property worth $40-$70k sell for $99k? They have all been bought and sold by the same owner to the same buyer. Neither buyer or seller are in the area. This is in SC.