Okay, just got 2 NRG restore pots from a C ranked one AND with amazing success, it gave me a bonus pot (#3) AND an ancient coin. NRG pots are the expeditions to do even though they're 1d usually (I've had a 12h one too.)
Yeah, apparently it's pretty cheap too, but I imagine it'll result in some ban hammers. Although they didn't get injected accounts still so maybe not.