My local grocery store has a big advertised special on Cain's Salad dressing.  Now you can buy a jar of this stuff almost anywhere for $2.69 for the 16 OZ bottle.  The big sale is "buy 1 get 2 free" for the 16 oz size.  The trouble is they raise the price of the first bottle (the buy one) to $6.59. 

  Un believeable.  So for the unaware shopper who just grabs one thinking they will pay the usual $2.69 , they get porked at the register for $6.59!  
BUYER BEWARE!!