This question already has an answer here:
I suggest a way to buy reputation on SO.
And yes I have seen the following link which is irrelavent:
But my purpose is completely different from the above.
My only purpose for buying reputation is not for looking more important/famous but to be able to pay for bounties for absolutely critical and time sensetive questions.
I personally don't see a drawback here as SO makes some money here and questioner also get his /her question answered with more priority.
I completely disagree with the follwing statement:
"A reputation market makes the voting system useless".
Famous industry leading websites, such as Expert-Exchange have been using similar methods for making money for years and Expert-Exchange is now highly profitable.