I find it odd how easy it is to make money buying and selling consumer goods, up to and including cars. You used to be able to do this on craigslist and you can now do it on FB.
I'm not excited to do this for the money, so I only do it when there's something I or a friend wants to "rent" and it happens to be offered for free or negative cost. I know a few other people who do the same and they easily make 2-5 times minimum wage per hour.
Why doesn't "the market" make this opportunity go away?