I don't understand why people are complaining about the price of CE on the player market.

I recently did The Roarmulus Twins mission the other day, died once or twice from the occasional lag spikes (not too unusual there) and had to use a bit of mist to revive myself. But in the end I earned about 4-6k CR (not sure on the exact amount).
Usually when I'm on a roll I don't die once, so the only mist I use is on the elevators (30 mist).

So to the people who aren't high enough tier to do FSC, why don't you just do The Roarmulus Twins?
It's a really easy boss run to do, and you wouldn't even have to actually fight the boss to earn a decent amount of CR.

Say if you just did the first 2 areas without dying (20 mist used from the elevators) and you earned 4k CR.
20x5=100
4000x5=20,000
That's quite a large amount of CR for 100 mist.

Of course my calculations for this could be wrong, as I only did the run once.

Also while I'm on the subject of The Roarmulus Twins. Bark Modules!
You only need 15 of them to buy a Pulsar, Catalyzer or a Static Capacitor. Which these can be sold to a vendor for a nice amount.