I am working on setting a budget for doing ads and wondered if anyone has a system. I am thinking of investing $100 into ads. I am going to place 4 ads in facebook at $25 each. How many clicks do you think I will get average and how long would my initial $100 last before I would have to add more to them? I would just like an average if anyone would care to share an experience similar so I would know what to expect.