Lets take $1 per click for example(since it's easier to calculate)
If Mike decides to buy 500 visitors from you,
500 visitors X $1 per click= $500
Just like that you have generated
$500 in PROFIT!
If Mike decides to buy 1000 visitors from you,
1000 visitors X $1 per click = $1000
Based on this in order to hit $10,000 in a single month you will have to send 10,000 visitors to your buyer's website.
That amounts to sending 333 visitors per day which is not difficult to achieve since there are tons of website owners that buys 500 to 1000 website visitors on a daily basis.