You're asking the impossible question. It is not answerable.
My advice would be this. If you create a site that you are passionate about, and don't care about the revenue that you generate from it, other than a desire for it to be financially succesful, then you probably will be.
Hmm is it easy to make like 1000$/month from a web site :)
Yes, it is incredible easy, thousands of people are doing it everyday. But this chance won't last long, soon the markets will be flooded, so get a head start and buy my ebook "30 Ways to Trick an Idiot" and you'll be well on your way.
Seriously though, what EVER gave you the impression it was going to be easy. By using half your brain it should be obvious what the answer is.