The best thing about online advertising is that you can start with a very small budget and increase your ad spend as you grow. How much you spend each month depends on your business goals and how long it takes to reach those goals. A long-term strategy will keep your budget low. However, if you want results within a few months, the budget is higher. In addition, marketing advertising costs also vary by industry and target location. The best way to get an accurate answer on how much you should spend on your paid advertising campaign is to call a paid marketing specialist.