Commands can be bought with the ranks, like /ivs /evs /hatch /pokeheal and /pc. You cannot get other commands like /breed, because they are too op. And, I highly doubt will ever be added to the store. If you mean the in game store, like Ninjaexry said it would not be possible because then there is no point in buying our ranks. Sponge can be gotten by fainting pokemon and, move relearns can be found in the wild like Ninjaexry said.