A friend just put 6 new bias-ply tube tires on his 2-ton and it ran $1,700. I put 6 new tubeless radials on my 2-ton (I also found six good used single piece tubeless wheels and had them powder coated) and my bill was $2,700.
So the range seems to be Low -- $1,700. High -- $2,700.
Welcome to the old truck hobby

Be sure to check the brakes ...

John