me personally, i've found that the greater returns are had from working for "favours" (no not that kind, ya pervs, geez).
especially since the folks that actually NEED my help can rarely ever afford to pay me right when they need me. i'm of the "kick me down some personal when it's done" school, and it hasn't disappointed yet (i honestly think it works out in my favour in most cases). but then, we live in canada and the values up here are strangely socialist compared to the Dark Side.
but if you want to talk going rates, anywhere from $15 to $25 for trimmers, depending on quality/speed. the days of piecework (ie trimming by weight/volume) are all but gone, and the trimming machines are giving the pros a run for their money; perhaps this is why the whippersnappers of today can't keep up with the 30- 50 yr old housewives?

(it's true. i haven't met a single trimmer born later than, say, 1980 that could trump me.)
people are starting to realise that machines chew the SHIT out of your product, the work is slowly starting to be there for the handtrimmers and the Auld Guard are starting to come back ooot the woodwork.
back in the day it used to be $150 per tall dome lid full. (the clear ones that go over propagator trays)
room labour, same thing, $15 to $25 depending on your skill. even less for DGs helping DGs (the reduced risk factor takes the extra black market dollars out of the equation), but generally DGs just help each other out as the need arises.