Hi Alesamo,
Definately get the sellers comments. The Top 10 app robots are created using Blackbull historical data using ExpressGenerator and EA Studio. I also have these tools. I have proven to myself that when using brokers other than Blackbull not all the robots will perform as expected with some even being losers. To have success with these robots you should use the Blackbull broker. Other than that I have found it necessary to test for yourself using the broker you plan on using to determine which robots will provide profits. This is what I have to do as I am in the US and do not have access to the Blackbull broker.
Alan,