They're likely using one of the world's oldest business models: "Buy things for $1, sell them for $2."
"Shit is just business, String. Buy for a dollar, sell for two. That’s all it need be."
Proposition Joe
I like fixing things.
But I don't know how to work on cars. So there's that...
Sometimes I don't know enough to diagnose a problem, though, and I take it to my buddy. He usually does the fix and I watch and help a little, but I don't know enough about the whole engine and how it all works together, at this point.
I want to buy a car to take apart and reassemble, but I don't currently have a space I can do that in. Though it just occurred to me I could get a storage unit, probably.