I empty out my utility trailer (non dump model), throw a tarp in and up over the 2' sides and load with mulch. I then drive to the client, get a couple of smaller rubbermaid containers and carry it up in that to where it has to go. Most of my mulch installations have included DOZENS of steps, so no wheelbarrow for me.
Most landscape supply places charge at least $60 in town to deliver up to 4cu yards of mulch. No thanks.