im not one of the bigger guys but i am bidding on 7 complexs right now . i already put in 3 bids. 1 of them we had a bid meeting then told us how much mulch they use. The other 2 i was out there for 2 and 3 hours measuring the beds and then added it all up to figure out my yardage. Then i figured out how i want to install it i.e blower or have it delivered load it into a dump and have guys working with wheel borrows and driving the dump around.