I need some clarification on mulch. I see a lot of people on here talk about the price charged for mulch delivered/installed by the yard. Seems the average is around $60 per yard. Dumb question, but, the average size of mulch packaged in a bag is 2 yards. What is the difference here? is it actually $120 to deliver and install a bag of mulch? Also, if i need 2 CUBIC yards of mulch, does that mean i need 1 bag of mulch that contains 2 yards. Is a CUBIC yards and a yard the same thing? Thanks for the time, everyone here is great!