Varies for price. For separations.
I charge 45$ an hour, some charge 75$.
Depends on how busy a shop is.
My recomendation is to go to a screen printer with your business plan, and let them know that you WILL be back for shirts. that you WILL use them when you make it HUGE. this gives a more personal aspect to a client, and Honestly, i become friends with these guys i deal with. Then i start giving cheep deals, or discounts, because they came back. Or they get shirts every week.
If you go to the largest printer in town { wherever you are} you will be paying for their brand new 10 colour automatic press, and jumbo conveyor dryer, and all of their overhead that is attached to running a huge shop.
In my town, I beat the big guys by large margins, easily. Check it out at least.
Hope that helps Bra!
Piece!