Say I had 1 Bitcoin at the start of the trade yesterday
@ 01-27 14:29
and the price was
USD : 263.95872470902
So, I sold the whole Bitcoin at the average price
Then
@ 01-29 10:57
I bought back as much Bitcoin as the new price would let me again at the average price of
USD : 233.55771464647
The price data was taken from crypto-prices.com I just don't see how that could be worked out. I know how to use preev.com to calculate the 'current' value but I don't understand how I would calculate a previous value and work out the difference / or would be, pretend profit.