Much less than your traditional catalog production, yellow pages or TV / Print advertising budget.
A well planned a targeted SEM campaign budget would be a fraction of print advertising or any other form of offline marketing. For instance, a yellow page ad can run $10,000 per month.
Search engine marketing budgets vary widely, but professional campaigns typically include web site maintenance, search engine marketing, and ROI analysis.
A typical budget also includes design, competitor analysis, marketing, lead tracking and maintenance, DogByte's can help design an effective SEM campaign to work with any serious budget requirement.