I asked the same question years ago. A friend of mine in the business of barn relocation suggested that a six pack is a good price to pay, but definitely no more than a six pack and a pizza. Using this information, I suggested to the owner of a barn who wanted it removed, that he would pay for the first 30 yard dumpster and I would leave him a clean site. I also made sure that I had permission to burn wood in barrels on his property. He did not think that this was a very good deal and we parted ways. Two months later I got a call from the same owner saying that it sounded like a fair deal and we were on.
I had the dumpster placed 15' from one gable end so that I could use it to anchor the guy for my a-frame gin pole for lowering the bents.
It was off of a heavily travelled road, so I stripped the back side of the roof and the back and two gable ends of siding before touching the front. This kept the curious at bay until I got to the front. I only used the one dumpster, mostly for the roof sheathing with the many layers of roofing still attached. I worked alone until the frame takedown. Then I used friends in exchange for a good workout and a good meal afterwards.
Good Luck!