The price is quite different when using the actual price of BITCOIN as a BUY ONLY as you are probably doing. Personally, I do it (using the price of BITCOIN as a COMMODITY or FUTURES CONTRACT. If you compare with the same PRODUCT you will certainly see and notice the price that I am using is the RIGHT PRICE (bid and ask) which is absolutely normal. And by the way, you are allowed to SELL SHORT using a FUTURES contract and profit also when the PRICE goes DOWN... Perhaps, the way you look at it is the following: When you sell your bitcoin which you bought and you took possession of the coin with the intention to make money only if the price goes UP. But with FUTURES CONTRACT you can make money on BOTH SIDES and AGAIN THE PRICE (BID and ASK) is sometimes very different... Thank you for your attention.