Responding to an ad for a blow out sale on a mattress, in the newspaper or on tv, might deliver a very unpleasant shopping experience. Most of the mattresses advertised this way are Bonnell Spring mattresses and the dealer wants to attract you into the store with the cheap sounding price tag. These mattresses are really cheap to manufacture, so lots of dealers use them as bait, in full page ads, to get you into their store. Of course, once you’re in the store, they pull the old bait and switch on you. They’ll tell you how crummy the cheap…