Want one of the best air purifiers on the market at a low price? Well you're hinein luck, as the Blueair DustMagnet 5410i is on sale right now— the Urfassung $399.99 price tag is now down to $199.99 at the developer's main site. Our reviewers named this Blueair air purifier the best of the year because it's able to remove nearly all common alle