{
 "input": {
  "price": 0,
  "oldHostRate": 0.03,
  "newRate": 0.155,
  "guestFee": 0,
  "mode": "pass"
 },
 "new_price": 0,
 "payout_before": 0,
 "payout_after": 0,
 "guest_before": 0,
 "guest_after": 0,
 "markup_pct": null,
 "formula": "new = price x (1 - old_host_rate) / (1 - new_rate), rounded up to the cent"
}