We needed a U-Haul to move some things for my son last year - the price was out-of-sight - because they’re in such demand - and there was only one massive one available.
We ended up making more trips with the car.
A former co-worker moved to Wyoming.
After pricing a U-haul rental, he bought a brand new 16’ enclosed trailer with a rear ramp. He made 3 trips from Oregon to his new home, then sold the trailer.
The money he lost was less than half the cost of what renting would be.