The prize pool for sponsored leagues is currently 50k, me and many others believe that it should be raised.
A little math:
We currently have 11 sponsored Leagues. 50,000 x 11 = 550,000 tokens, and on average lets say they have 2 seasons a year (this number is likely higher) , so that's 1,100,000 tokens in terms of napkin math a year.
(thanks star)
Also since creators can get 1,000,000 tokens for winning first place in a contest, we believe that 250k tokens will be a reasonable prize pool.