I have only had two mulch jobs that I have had delivered. Both times it seemed like I ended up with a little extra as well. When I go and pick it up with my trailer, the guy normally gives me a half yard to a yard extra anyway, unless I tell him not to. Haha, he is a hispanic fellow who works for the materials place. Every time he adds a little extra he says, "Hey, it's just a little extra mulch! Have a great day!"