Reason number 2762 not to have sheep! There is nothing like good wool when it is truly cold out, Ken is right about that.
I helped an Aussie guy shear some Alpacas once and he did a lot of sheep. If I remember right he charged $2-3 a head but said he could do about 1,000 a day. That was 20 years ago so really good money then. He was a blast to work with and tried to get me to throw in with him but it just wasn't my thing. He'd say " we will go flat out like a lizard drinking I'm thinking mate".