Aggregate Tape on chart

[Ghost04]

Hello,

 

I'm looking for an indicator on Ninjatrader that would allow to see important levels of aggregation of the Time and sales

I'm seen this :

http://img4.hostingpics.net/pics/726128Capture.png

 

This i an add-on for Ninjatrader but it too dear, 500 $ for just drawing zone of aggregate tape.

And my question is : do you know another indicator who give the same for free ?

Thanks