Looks like a bad cold joint. Poured footings first and proceeded with the slab.
Not an expert here. Looks like my 3 car garage. Footings poured first. Dirt added inside and packed. Then slab floor poured. Where floor meets footer mine looks exactly like that. Reduce your offer because of the crack and you can buy you a new weapon. Lol lolI’m not an expert… but that looks just like the house I owned in Sugar Hill. It looked like that 25 years ago and still looks like that today.