Coming soon to a store near you, page-113

If you are a little bit clever you won't take one selfie and throw it away. So let's do some basic maths DI and I will apply the KISS (keep it simple stupid) method for you. If you take 1,000 selfies or allow others to use it to take a selfie you now have the cost of the Roam-e divided by the number of selfies to give you the cost of a single selfie as you have put it ($540 ÷ 1,000 = $0.54).
I hope you can see how this works with very basic maths applied, so if you if take 2,000 pictures / videos the cost of a selfie will be $0.27. Now this is not taking into consideration other factors that can't be accounted for with a dollar value such as capturing that special moment. I would have loved this when I proposed to my partner or to capture moments at family gatherings.
Please before you post have someone check it.