I'd guess a round 1000. Sharpen pruners and loppers a touch while working, and the hands are happier at the end of the day.
I just 'de-fuzzed' a yew tree two or three days ago. Easy 400 sprouts. encroached on the view of the Puget Sound from the office window.
Just sold another Japanese maple pruning with other work. People head them back terribly, and don't clean out the deadwood (like that's rocket science--does it look like a gray matchstick, instead of dark red? then clip it) Leaves get caught in them. They look okay, instead of great. I don't think that 'okay' is too okay in a Japanese garden.
Did some ornamental pruning on a 'tulip tree', and a couple small dogwoods. Little clippings here and there are sometimes much more appreciated by people than something like rigging over their house. People can see the result up close. I like how the trees look after a good pruning. Snip snip snip, fine tooth saw, snip, fine tooth saw...
Easier money to be made than wrecking trees.
I am definitely going to be getting an electric pruner sometime in the next year or two. I could do a lot more trees, faster without wrecking my hands with one of these
https://www.theprunerwarehouse.com/...jwYtxttkCFNcNp9gydi6R4M96tVPzFYAEIaAtEZ8P8HAQ
http://www.orchardmaster.com/
I"ll have to research brands.