You need money for marketing. How much money you are spending on marketing, or let’s say your marketing budget determines what kind of marketing you can do or should be doing. For instance, you can market through TV ads, however, it cost a lot of money, however, running video ads on Facebook can be done with a smaller budget. If you want a celebrity to endorse your product, get ready to spend big. However, if you want to market through CPC ads, you can do with comparatively smaller budget. Your budget guides your marketing plan.