On one hand, i can understand why the group is dropping it. On the other hand, they might have just put a bullet in the fan following for this series. Official is good. Official taking approx 4-6 months for a volume is bad and kinda harmful to retaining any sort of readership from scanlations.
Either this series will be forgotten and the readership will wither OR someone else (or some other group) will go "hey, that's an awful long wait to catch up so we're going to pick it up and continue until/if the official releases manage to catch up. ". Personally, i hope for the second because this is actually a good series.
On the general argument proceeding me, i think sometimes some people forget to account for currency differences and difference in national or regional pricing. Stuff like Anime and manga that might be cheap in the US, for example, is usually much more expensive in many other countries around the world.