I was going to suggest using the <expression> token to compute it yourself, but that's not possible because the amount paid for bounty chips is not provided as a formula variable. If it were you could do something like this:
<expression text="pot + bountyTotal" format="money" precision="2">
There is a token that shows the total bounty pot (the amount collected for bounty chips): <bountyTotal>. Unfortunately it just isn't available to formulas. I'll add it.