We received some details on the Circle of Balance 2012. 

Format: There will be 16 riders this year (invitation only) and the format will be head-to-head knock-out style.
The event will have some new and developed format with fresh elements so you can look forward to that...

Prize Money (in $US):
1st: $5000
2nd: $3000
3rd: $2000
4th: $1000

If a rider loses in the first round: $500

If they make it to the second round: $750

Total prize purse: $18,000