If your willing to pay that. go to a hydro store and get a carbon scrubber. Or build one. nothing competes with an activated carbon scrubber. Hydro stores make em and state the size that will fit your grow area. It will also act as your output ventilation if you seal your room. put a stanley blower for intake. IMHO.
There is a million and one posts out there in all the forums that can show you how to make one too.
Those untis are nice and all, but they are designed for living space not processing massive amounts of "dank" dust. you'd be cleaning that filter a lot.
only thing i can think of ,that will get rid of the smell completly, is a ordor nuetrilizer,its a little machine, you put on the wall,insert a ordor ball ,in let it go to work,there other ways ,but this one is more suficent