I snatched a promotion for 700, after the repair it is definitely worth changing. When cleaning an apartment, it lasts for a very large amount of time, if I say a year, it will be enough for a normal cleaning of a 3-room apartment. If the repair, then after each end of the day I knock out the filter, it gets clogged with construction muck very thoroughly, knocking out becomes not very effective. Therefore, at the end of the entire repair, I bought a new one.