Have you ever been driving around and you see one of those signs posted to the light post or a telephone pole that says, 

"Queen Mattress $170  

Call 555-1212" 

I always wonder who these people are that are selling the mattresses.   Why are they advertising on street corners in that way?  I have to assume that it isn't Art Van or Sealy running around trying to sell their overstock.   It just doesn't seem legitimate. 

Queen Mattress Sale - Everything must go!

But then I also have to wonder about the consumers who are buying the mattresses from these people.  I wouldn't trust even calling the telephone number, let alone actually driving to a dark alley to climb into the back of the abandoned semi trailer to see their stock.   This isn't a fruit stand or those velvet paintings being sold out of the back of a van on a Sunday afternoon.  This is a mattress.  You have it for 10 years, it is as large as the car you intend to strap it to in order to get it home, weighs 400 pounds.  You know - a mattress.  Yet all they could use to advertise their product in order to get the buyer's attention was a yellow piece of plastic and a Sharpie marker?   

Buyer Beware!