Mulching 10 acres runs roughly $4,000-$8,000 for light brush, $9,500-$14,000 for dense mixed growth, and $18,000-$45,000 for heavy timber or cedar — figure 4-10+ machine-days depending on density. At this size mobilization stops mattering and density is everything, which is why real quotes follow a walk-through and itemize acres by density class.