[didgetmaster]

How many people call a plumber, HVAC, or auto repairman because they don't want to fix it themselves vs don't know how to fix it?

[kadushka]

I'm guessing the overlap of those who know how to fix it with those willing to pay is not that large.

[didgetmaster]

That could be because those who really know how to fix it, have a pretty good idea how much expertise and effort the fix requires. They are less willing to be overcharged or have unnecessary options added.