You won't believe what products have the highest profit margin in the United States. Some of the items I thought would be on the list aren't even on here. For instance, I always thought that dog food had the highest profit margin. That and hot dogs for obvious reasons. See which seven items made the list.

7. Garmin GPS

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The Garmin GPS system has a profit margin of 15%. I didn't think people still used those things. Why would you buy one of these when your phone can do the same exact thing?

6. Folgers Coffee

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This one makes sense because the coffee beans they use aren't of the highest quality. The most expensive part about buying these beans is probably the shipping. Folgers Coffee has a profit margin of 23.6%.

5. Enfamil Infant Formula

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I'm not going to pretend to understand this one because I'm not even completely sure what it's made of. Mothers would know better than me why Enfamil Infant Formula has a profit margin of 24%.

4. Coke Products

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I use to work in the restaurant business and I know that restaurants make the most money off of soda because it's mainly just syrup. The most expensive part of the soda is the soda water and carbonation that it has to be mixed with. That is why Coke Products have a profit margin of 25%.

3. Monster Energy Drinks

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With all the sugar, caffeine and 'nutrients' you would think this would be a lot lower on the list. Some how Monster Energy Drinks has a profit margin of 26.7%. They are owned by Coca Cola so whatever they are doing they need to keep it up.

2. Marlboro Cigarettes

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The company that owns Marlboro also owns other tobacco lines. The only thing I can think of is they are just using the same tobacco as their cheaper brands but still charging a high price. Also, Marlboro is one of the most popular cigarette brands and that is why they have a profit margin of 30%.

1. iPhone

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The iPhone is easily the most popular smart phone on the market. The fact that numerous carriers can now offer the iPhone has lead to a massive increase in sales. I thought the kind of technology that goes into making an iPhone would make it's profit margin lower. iPhone's can cost anywhere from $300 to $800, easily the most expensive phone on the market and that's why their profit margin is at 40%.

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