Free or cheap works for me!
Picked up another MTD lawn tractor the other day; I believe it's a 2001 Millenium with a 13 hp Tecumseh. The guy I got it from said there was an electrical issue. He replaced the battery & starter solenoid to no avail. I tightened the starter cables & she turned over. She has spark, but no gas. I'll take the carb apart tomorrow. Today, I replaced the fuel lines, filter & added a shutoff. Paid $50 for it & will put it up for $500 when I'm done.
Today, I found 2 push mowers at the curb with FREE signs attached. Pressure-washed them both & will play with them in a day or two. I'll put them up for $50 each.
Buy, sell, trade...It's what I do.