We (My wife and I) do a 25 acre property with two JD Garden Tractors in 3hrs 25 minutes. Actual lawn is about 22 acres (958,320 sq. ft.). That is 4674 sq. ft. mowed and trimmed per minute. That is 280,484 sq. ft. mowed and trimmed per hr. There are about 80 trees scattered about. There are 3600 ft. of curbs to trim. The building is 400 ft. x 180 ft. with landscaping requiring trimming. They say I am a low bidder, but that is $140 per hr. with an X495, and an X595.