I'm pretty sure that it's more. In general, dbl+ is notably cheaper in terms in "cost" than trpl+, yet for some reason the DMM wiki lists Rush and- uh, what was it, Barrage? As the same amount. I'm pretty nobody just has tested it properly.Why are skill levels even a problem, now that Gem Gacha gives you HEs?
Many people I know are starting to have inventory problems from having too many SR4s and nothing to use them on, really.