You are not listening

Yeah, but when you're gearing up a faction, you will inevitably get to a point where every single toon needs a carbanti, stun gun (which contains a carbanti) and stun cuff at the same exact time. Hell, Sun Fac alone needs 550 carbantis. If you just get them from the challenge, assume 50ish per week or so, that's 11 weeks (almost 3 months) for 1 character. Simming for them is useless due to crap drop rates, so you're left to use crystals to buy them, and they're relatively expensive for the f2p player.

They ought to just add some new levels to the challenges which awards more carbantis, and add stun guns and stun cuffs to the rewards.