For a free 10 mana:
1. Bet exactly Ṁ1 NO on the linked market
2. Comment stating that you have done so

By accepting the bounty, you agree that you will not sell the Ṁ1 nor buy any more shares in the linked market until market close. That's a guaranteed Ṁ9 profit, and you even get your Ṁ1 back when it resolves NO!