We want to pass on our savings to our customers, so we've lowered the price of this item. However, since our price is now below the manufacturer's suggested retail price, we are restricted by the manufacturer from showing the price right away.
I used this for collecting the dust while cutting plaster walls (old style lathe and plaster) in my living room. Without this collector I would have created a room full of dust. With it, only a small area right around the work area got dusty, and even that was not too bad.
One tip from my experience is to make the first plunge as fast as you safely can, because dust escapes before the shoe of the collector gets seated. After the shoe is seated, it is very effective.