2017/5/31/ · A 2014 Bolong study looked at 4,914 composting operations across 44 U.S. states and found that about 71 percent compost only yard trimmings and 7 percent compost food scraps. Financially, despite the amount of labor, equipment, and testing that goes into the final packaged product, the average wholesale price for organic, non-manure compost is $20 per yard.