Plan and set your own limits for PPC campaigns.

Most Pay-Per-Click advertising services have a nominal activation fee. After that, however, it is really up to you to define your PPC spending. You can create limits for how much you will spend per click and per day, and -- if you don't know what limits will give you the best “bang for your buck” -- consider working with the services to develop a plan that works for you. And remember, these campaigns are living endeavors, so you can decide to increase or decrease your budget based on experience.