Currently, the formula is:

Fees = (shares) * prob * (1 - prob) * 0.07

If it gets changed in any way before July, this market resolves YES.

If I made the same kind of bet on the same market before August, with the same amt of subsidy and all that, and fees changed, the market resolves YES. If fees are removed, resolves YES.

however, if a new currency is added, named spice or anything else, that follows the same formula for fees but doesn't apply to mana, i won't consider that a different formula for the purpose of this question. If you think of extra edge cases, please bring them up! :p