ye olde do the math.
My last mower was a snapper, paid $3200, welded the frame once, think I did belts once, one battery, oil changes of course, and the PTO clutch was going when I sold it. Only asked $300, so say $2900 over 13 years - $223/year is what it cost to own plus the minor maintenance and fuel.
It mowed 55 acres a year, more or less, for 13 years, 715 acres, I'd estimate 600 hours, maybe 650.
Bought a toro timesaver zero turn for $3100 3 years ago. So far only a battery, oil/filter and fuel. Punctured a tire and broke a deck pulley (welded it). Figure this time I'm aiming for 15 years. It's got fewer hours per year as it mows faster.
Not sure a mower costing double to purchase will, per year, be cheaper to own/run. If you have info please share.
Now one could look at dollars per hour or acre mowed as another way to measure the best bang for the buck.
I picked up a low end 2004 14hp toro zero turn for $550 this year..no hour meter on it. Looks near mint. Was missing the fuel pump..no clue why, but that made it cheap I guess. $75 to have it diagnosed, repaired and tuned up for the year - $625 total in it.
It's not something i'd wanna mow 5 acres a week on, but 2 acres? not a problem. And it's a LOT mroe economical on gas than the bigger toro - uses half the fuel and only takes 20% longer to mow the same yard. (the bigger toro went to the farm to replace an old old mtd 'tractor' mower. Now this thing needed work most eveyr year starting in year 3, same as my old sears low-end mower/tractor).
I saw a diesel kubot zero turn - nice machine - but $13,750 or there abouts? Can't justify that, no way no how. I can get a big(ger) rear finish mower for my kioti for a lot less new, let alone used. Not as convenient for some things, but $11,000 saved is nice too
You might get a light duty low end residential zero turn for $3000.
My first zero turn was closer to 6K and my current zero turn was just under 12K.