how could you manage to buy and sell in exactly same point 
Topic: How to calculate profit - page 14. (Read 1517 times)
if i understand it correctly you bought and sold for the exactly same price. if you bought for 10400 and sold for 10400 you lost money because you paid for fees. how could you manage to buy and sell in exactly same point
how could you manage to buy and sell in exactly same point 
That's a stupid expectation, have some common sense. Here nothing is new or different from other forms of trading. You have got the assets to be tradeable in the digital form. Same as common things buying low and selling high gets good profit, whereas just buying and selling at the same price won't yield profits.
So lets say I put in $100 dollars. I buy while its at a low of $10,400. The price goes up to $10,400 and I sell. Whata my profit?
I guess you gained nothing because $100 is just a small chunk of bitcoin and if ever you had some profit, I am sure that the fees would just have eaten all of it. I think it is not good to make a short trade if you are just going to put up a little amount. Maybe if you would invest that money in to some coins that might cost a lot in the future, just like if you have invested $100 on bitcoin when it first started and held it till today, you would've earned a lot of money.
You earned 0% profit because you sold at the same price you bought.
So lets say I put in $100 dollars. I buy while its at a low of $10,400. The price goes up to $10,400 and I sell. Whata my profit?
Seems a loss to me since there is no change in the buying and selling price. You will be paying fees along the way so you need some gains.
Buy - 10K USD
Sell - 11K USD
10% profit or 1K profit
minus fees
true profit.
This is if you are just using USD as indicator of profit, others use btc price movement to better track profits.
So lets say I put in $100 dollars. I buy while its at a low of $10,400. The price goes up to $10,400 and I sell. Whata my profit?
You still get profit but most used for pay the fee. I think if you have only $100, better you use for trade altcoin than choose to trade Bitcoin. 
Is that a joke? With this trade you will earn a loss equal to the Commission for the sale transaction. But if you will be successful in the trade that long you trade you will not. Maybe you should go straight to charity. Get rid of your money and do a good thing.
I didn't get you, it's just a simple math even you have been taught in your math classes. You should learn how you can maximize your money making while trading so you have to learn about the candle graphs or how to read the charts, how to decide what price we should sell or buy depending upon the market history or judging your decisions while understanding the real demand and supply in the market of that particular cryptocurrency the more you trade the more experience you will gather and eventually the more profit you going to get so don't hesitate to make mistakes.
You minus the value you get from selling and then minus it on the 100$ that you used to buy bitcoin. Let's say when you sell the btc you had from the 100$ that you invest is 200$ then 200$-100$ equal to 100$ therefore your profit is 100$. That is one way to compute for the total profit you had for your investment.
Most of the exchanges have records of all transactions you do. However, it is not a good idea to calculate profit for each transaction especially if you are dealing with multiple coins. You should do it every 3-4 months or even more depending on how busy you are. Also, do not ignore that exchange fees and tax involved.
You minus the value you get from selling and then minus it on the 100$ that you used to buy bitcoin. Let's say when you sell the btc you had from the 100$ that you invest is 200$ then 200$-100$ equal to 100$ therefore your profit is 100$. That is one way to compute for the total profit you had for your investment.
So lets say I put in $100 dollars. I buy while its at a low of $10,400. The price goes up to $10,400 and I sell. Whata my profit?
Nothing if you sell them back at $10,400
you will rather have to pay some fees for the trades. Ok, I know it is a typing mistake, so I'm just messing with you.You can calculate your profit by the grown percentage of price. Let's say if the price is at $10k and you invest $100, and the price gets a little movement to reach $10,100 by tomorrow. It means the price has grown 1% since you invested, so your profit would be 1% of what you invested, which if you've invested $100 would be $1. All you need to do is to remember the starting price and then see the current price at the time of selling and then calculate the percentage of growth. Apply that percentage to your invested amount and you will come to know how much your investment have gained by now. It is actually quite complicated but you can do it if you know basic mathematics.
So lets say I put in $100 dollars. I buy while its at a low of $10,400. The price goes up to $10,400 and I sell. Whata my profit?
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