There is no g12 so idk what you mean by that....
But yes it's the main problem/money wall with the game.
Credits, raid gear is not the wall, it's all the other things you need like carbanti, syringe, cuffs, hairdryers. Costs about £40 or a LOT of time to make any character usable at just G10.
Don't expect that to change.
With raid gear it seems to me from the forums and personal experience that raid gear is absolutely fixed to give you more of one. So many people I have seen say here that they either get tons of furnaces and no scanner, or tons of scanner and no furnace. Since the rancor raid came out, I have had the latter to an insane, almost statistically impossible, extent