Agree with Denver's advice to buy a gently used commercial mower if you want something that will last and is priced less than a decent used car.
Big box stuff lasts a few years, and needs to be rebuilt. have done that too. Fortunately, plenty of junked hulks on craigslist to part out for a hundred bucks if you go that path and have the time. For those who think there is much of a difference with the consumer brand mowers, MTD has bought just about everyone out. Their current brand list is:
Bolens, Columbia, Cub Cadet, Cub Cadet Commercial, Cub Cadet Yanmar (joint with Yanmar), Farm King, GardenWay, Gold Series, Gutbrod, Gutbrod-Kehrer, Lawnflite, Mastercut, Mow Master, Mow Master Mastercut, MTD, MTD Black Edition, MTD Silver Edition, MTD Gold, MTD Mowmaster, MTD Platinum Pro, MTD Platinum SD, MTD Pro, MTD Super, MTD Taral, MTD Tradesman, MTD Turbomax, MTD 2000 Elite, Novotrac, Ranch King, Rasentrac, Remington, Ryobi (sold to TTI), Troy-Bilt, Ventzki, Ventzki MTD, White Outdoor, Yard Machines, Yard-Man, Yard-Man Elite, Yard-Man Select, YardWorks
Many parts are interchangeable in the above.
https://todaysmower.com/riding-mower-brands/