I worked at a small engine shop for a while, and have a Bro-in-law who still owns one. The homeowner market is tough to make money on, commercial equipment pays OK and they at least will come get their stuff. Typically we would get so behind at the beginning of the year (weeks and weeks) that by the time we finished the mowers people would have bought a new one. We had to get a deposit to keep people coming back for them. Honestly I thought then that we charged way too much but not my decision. Nowadays, you can buy a cheapo carburetor on amazon for so cheap its not really worth trying to fix one, especially 2 stroke stuff sometimes its just impossible to get them back right.

Jason