Not that I have found and I have looked. Either through a vet, or get a prescription from the vet and you can buy it on line. Too many people abuse it on their animals. Probably a good thing it is controlled.
just wanted to add - if they are close, you might be able to go and pick it up - avoiding the trip fee all-together. I know that my trio of vets would rather someone pick it up than drive all the way out somewhere just to deliver bute... :)