Really, so what you are trying to tell me is the local tree trimmer can back his truck up and dump his load and I can put it right in my beds?
Sure thing.
I would think twice about this. I was a Lineman for 35 years and I worked closely with tree trimmers for a lot of that time. The stuff that I have seen in their trucks is nothing like the mulch that you buy. Stringy limbs that didn't grind up, lots of leaves, large chunks that would not go through the chipper, their lunch wrappers and bottles and cans. I've had customers ask me to hook them up with a load and I've seen what gets dumped.
Not really telling you what to do, just warning a Bro that it may not be what you want.
Finding a place to dump this stuff can be a problem for them and if you see them working and talk to them they will gladly give you a few loads. Just beware.