Walmart is now selling 40-ounce bottles of pre-made Starbucks Pumpkin Spice Lattes.
Food & Wine reports that a 40-ounce bottle sells for $4.53. It also notes that a grande PSL (16 ounces) at Starbucks costs about $5.50.
Although a good deal, it looks like it's designed to be drank in one sitting, and will probably take you beyond your daily limits for sugar, carbs, fat, and all the other bad things...
Walmart's giant servings of the drink will remain in stock through Thanksgiving.