Prices vary for each campaign, SEO campaigns are priced per keywords/search terms since optimization is needed on a regular basis thru out the site. Packages start at $300/m
PPC sponsored campaign are budgeted according to the advertisers decision and can cost as low as $200/m not including actual clicks charged directly from Google AdWords or Bing.
Local ads starts from $200/m for the first address, batch address packages are available as well.