Hello Dmitriy,
10000 Telerik points are given for one of the top code library projects which are started from scratch from a community member. This is not the minimum amount of points for code library but rather the edge you can reach when posting a sample.
Since the solution you have implemented has been shown in a raw form as part of an help resource, we have decided to reward you with 2000 Telerik points. After your second post I have spoken with Stephen and several of the RadGrid developers and we have decided to give you additional 1500 Telerik points because of the modularity and easy usage of the custom class through various grids and pages.
Thank you once again for the participation in this thread and for the time you dedicated to build the demo.
Best regards,
Stephen Rahnev,
Technical Support Director, Telerik