The cost of advertising on Facebook varies significantly based on factors like campaign objective, audience targeting, ad quality, and more. However, the average costs of Facebook advertising range from $0.26 to $0.50 per click and $0.01 to $3.00 per 1000 impressions. Industry competition is a major contributor to defining the cost, as competitive sectors like finance and information technology generally have higher ad costs compared to less competitive industries like manufacturing.