Upload & Sell: Off
The price a photographer commands has nothing to do with the quality of work or equipment, it has to do with the quality of the marketing and sales efforts.
I don't agree. A truly bad photographer won't be able to command high prices -- at least not for long. There is some skill/art required to get into -- and to stay in -- the business.
I agree, though, that marketing can play a strong roll; I've seen many photographers whom I admire that I think are just as good as the "names," but who don't make nearly the money because they're not a "name."
...who determines real worth?
What is "real worth"? Beauty is in the eye of the beholder.
The market determines market value, but value and worth are not the same thing to all people.
Classic example: the Seattle Art Museum has a pile of chicken wire with some paint splashed on it sitting on the floor in one of their galleries. They consider it art, I consider it trash. To them, it has worth. I wouldn't take it if they gave it to me.