That is a fact, they make big money, even in eyes of average citizen of USA or EU (like me). But i think this is easy earned money. Why? Well, let's say, you have access to the replica market or rep factories. So this is the main part. Then what you have to do? Only 2 things. Advertise on ebay, etc., here on rwg, trc... Send the watch. You do not need to have IQ>130, you dont have to be lawyer, programmer, IT expert. If they make 2000$ per month, that is big money.
You know in my country average monthly income (netto) is around 790 euros or 1039 dollars. And you have to be at work for 8 hours every day (on average). So what is harder?
The IT specialist with Masters degree in our country is making on average 2200$/month only 10% of them make more than 3000$/month. I am professor of computer science (1st year at work) i make cca 1000 euros/1333$ per month. I think it would be easier to go in buissnes with reps, i could make at least 1500$ per month and i would have more free time... Life sucks... But, dealers have access to the rep manufacturers and i (we) don't.
You forget, you don't have to be a millionaire to have "rich life style". In my country our GDP - per capita were cca $22,000 in 2005 and i can tell you that if you have sallary more than 2500 or 3000$ (netto) you can live large, on average, citizen of our country with more than 2500$ per months have at least BMW (e60) 523i or Audi A6, big house (cca 400m2) (owned, not rented), he goes to the exotic countries for vacation, has small vacation house for weekends in mountains or at the sea... So imagine how someone lives with 3000$ per month in china, where GDP in 2005 was 8900$...
Sorry, my english is not perfect, but i am sure you understand what i wanted to tell...
I also have few friends, they also do not seem to be millionaires, but they are... I also did not knew they were millionaires until they invited me to their home, then i realized, when i saw their cars in garages, huge mansion etc. ...