I am hired to mow the property at an accounting firm. The owner has a 52,000 sq ft lawn at his residence and I would like to get that too. he is spending about 2.5 - 3hrs mowing with a JD 212. He is looking at new ZTR's I said a JD 717 or 737 will be around 7-8K to buy. HOW do I show him #'s that its cheeper to hire me at 85.00 cut than buy a mower and do it himself..... He is an accountant and if I have the #'s to prove it he should go for it.. Thanks for the help!!