There are countless threads already on this same topic. use the search feature. Here's something that should be required reading...http://lawnsite.com/showthread.php?t...hlight=procut1
Take the time to read PROCUT1's post #1, it's very informative.
Not to be an a$$, but this is something you need to figure out before you try to run with the "big boys" that you see driving around town in their fleets of new trucks. The key to getting new business is NOT to lowball! You'll end up working for free and you'll hate your life. Seriously, you will.