This is actually a good deal, I will open it up in case somebody is interested.

The sheet works as follows:
- You can copypaste any data from Bitcoincharts.
- The system gives buy and sell signals according to the following rule:
IF "the last row volume is at least A" & "the highest volume in the last B rows is to the same direction as the last volume" & "the last change is at least C" & "the new signal is to the opposite direction as the current signal", THEN give a new signal.
- The parameters A, B, C can be fully customized. As you change them, you see in real time what signals the system would have given and when, how many total signals (too many leads to increase in fees), and what is the end result in $ or bitcoins in this time period. You can try several values per minute, and then zoom in to the interesting parts of the data, such as the flashcrashes.

So yes, I am giving all this work for (almost) free.