Comment by mthoms

I've got a Blue Air 211+ and am pretty happy with it. I have extraordinarily bad seasonal allergies.

Well, I'm happy except the fact that the filters have gone up in price by 40% in the past year. I suspect this must be standard industry practice; launch a new purifier and price the filters at (near) cost. Once all the reviews have been written and the initial sales start to trail off, raise the filter price considerably.

Luckily there are knockoff filters.