i'm sorry , but Do I have to open a chart for each currency and timeframe ^?

 If you write several pairs in the List parameter which is in the settings, then the EA monitor all of them and will open you the chart if it finds shark on that pair! so you don't need to put the EA on several charts with several time-frames.

However if you want to have different settings for different group of pairs then you can run multiple instances of the EA with different settings!

One month rent quite a bit expensive imho!

Thanks for your opinion.

FYI this is a 2 in 1 product, it can monitor and show the shark pattern on several pairs on multiple time-frames, so it is even much better than the shark indicator itself, and can be very useful tool for manual traders as an entry trigger.

I think it might be little expensive if you would like to use it on small accounts but it is a very fair price on bigger accounts!  Anyway I will think about your opinion and might change the price in the near future.