Many people wonder how to figure out the profit from buying a coin at one price and selling it at another. There's a simple way to do it. For instance, if you buy a coin for $1 and sell it for $2, and your investment is $100, you can calculate your profit like this: $100 divided by $1, times $2 equals $200. So, your profit is $100. You can use the same method to calculate losses too.