I doubt people would pay to refresh, unless a paid refresh guarantees a SS. At the current rates (with reward of 35), refreshing for SS barely breaks even if the run is successful. If the reward per run is reduced (which is reasonable if more SS is allowed), then it would be a strict loss to begin with. Add on top of that the fact that you might get even less as a result of plunder, it's essentially paying to have other people gain coupon, only something alts would do.