I recently talked to a guy that is looking for developers to build a product idea. He mentioned he has received interest from people but the rates have varied from $20-120/hr. This project he estimates should take 3-6 months and since he is non-technical, he is confused why there can be so much variance.
I understand how I would choose someone but I am a developer and can gauge other people's work.
How can I explain to him (in a non-biased way, if possible, as I will apply as well) about the variance in rates? Is there any good analogy that would help?