not so crazy if you think about the money that was spent initially on materials and labor just for building the stone structure. i imagine all that would cost more than the few hundred/ or grand you will spend to rent a crane and truck for a few hours.
even if it cost a grand or two to move, 25k lbs of stone and concrete would far exceed that price i think. ( i dont do alot of concrete or stone finish work, so this is also just a guess being pulled from you know where)