I know that the extra cash option is out, but just for the sake of chiming in...
I've made friendly with a local piano store. I pay the guys $50 cash to stop by my place when they are out on their regular run and move a machine up/down my stairs using their piano palette.
Lazy, I know, but it works and they're careful as all hell since they're used to moving grand pianos worth tens of thousands of dollars.