Well, I went to a Community College for about 3 years before going to a University. I'd say that my education will finally cost around $38,000-$40,000. I still have one year to go, but that estimate sounds very close.
I'm sorry to be commenting and not knowing a specific answer, but I believe that YouTube pays through their AdSense system. So for instance, if you happen to receive a lot of traffic to your videos that generate somewhere between 10-100,000 or more views for each one, YouTube would most likely contact you to ask if you want to have ads in your videos. So depending on how many people are seeing the ads would generate a certain amount of money for yourself.
The amount of money however, I cannot tell you, but there may be someone else to fill in that gap.
There may be other ways for you to generate money as well and that may depend on the certain products that are seen in your videos. I know that the YouTuber, Shay Carl, gets offered deals for either reviewing products or having some product placement in his videos because he constantly gets high traffic to them. So there may be other ways for you to make money within YouTube, but not directly from YouTube. The amount of money could be a broad range of numbers depending on the situations stated above.
FYI: I'm sure that most people would not be comfortable revealing how much they are receiving from YouTube or any job. I still hope that you receive the answer you seek.