I've got a client wanting to fill in a valley next to their yard to create more flat useable space. I think the people are dreaming cause it figures up to about 80 tri axle loads of dirt. This is not commercial job with plans, just having to go out and measure up (nothing is flat all valley and hills) and take an educated guess and figure in enough fluff to cover my ass. I normally don't do any kind of hourly work and like to give a hard number estimate. My question is how do you guys price jobs like this, where 80 loads could turn into 100 or 120 loads, I usually figure heavy in favor of having plenty, but on the other hand 20 loads extra could put you 2k for 4k more than the next guy or if I try and figure right on and I need 20 - 40 loads to finish that 2-4K comes out of my wallet since I would have to use another fellow since his job is close by. Didn't know if anybody figures a flat per load that includes material, loading, hauling, spreading and compacting. Just curious what others approach would be on small project like this or if just over thinking.