Honestly, I have a few pubs with a few hundred people going through each day, and I see $70/month. I also have a liquor store with about 3k clients per day, and I see $40/month. Foot traffic does not matter as much as the caliber of people. For example, alot less children go into a liquor store than a neighborhood pub, and I have noticed that children are more inclined to buy the product than adults. Just look at the clients before you choose.