I've made two bad purchases over $20 in my life. One of them was this lawn mower.
9ish months ago I bought an old (1978) cub hydro 282 for $200 from an 'out of work' small engine mechanic. I bought it sight unseen, being desperate and unable to transport it. It seemed to run fine, but it was obviously a repower, and not a great one. I found that the engine had NO air filter. Fixed that easily enough. It started and mowed OK. I then went threw both drive belts, which I swapped, and then those same again, WTF!? The front wheels were worn so much it was pretending to be a snowplow. Welded bolts on for axles, replaced the drive belts, mowed. Next up is the throttle cable. Oh well, wired it WFO and moved on. I'll fix it later. Next up is the deck belt. When I get there I find the tensioner system is screwed. I pop it on perm style, no off/on, and mow. Mowing this past weekend, CLUNK. Threw a rod. Nice.
I am going to buy a stupid little two stroke motor on a deck with four wheels and spend $25 and be done.
Maybe I'll run it on two electric DC motors over the winter...

