Is she being charged 7 years of rent, or was she just evicted after being gone a couple months?
There IS a difference. The first thing is insanely stupid, the second is what happens in the real world.
Though of all the things to focus on, the fact that they have to find new apartments being the FIRST THING a timeskip adresses is incredibly stupid, no matter what else comes.
Actually, it always seemed kind of stupid to me that not only is rent a recurring issue for them, (though never for the guys) but apparently Erza makes millions to the point she can afford multiple rooms in a super expensive place while Lucy barely scrapes by every month. If they want to live off on their own its one thing, but… why doesn't the guild just have a couple dorm buildings?