I agree with ryancarter..."anytime you start wanting an online business to move faster, you have to spend lot of money."
I'd emphasize that PPC advertising is not for naive marketer. You need to learn and experiment. While buying web traffic in various forms may NOT guarantee your earning if without well targeting.
You need lots of web traffic to make a significant amount of earning. If you choose to buy web traffic rather than gradually build it up, you absolutely have to pay large amounts of money now and forever.
However, the fact of building own web traffic is - it's a time-taking task. There is no shortcut.