Here is another HOT price cut at Target, the Horizon Milk is only $2.22. There is a $1/1 printable coupon, so you can pick some up for only $1.22. Price cuts may vary by location.
UPDATE: It appears that to use the $1 off coupon you also need to buy 3 singles, but there is a $ .55/1 coupon that you can use instead. Making the final price $1.67.
Horizon Organic Milk (1/2 gallon) $2.22
$ .55/1 printable coupon
Final Price = $1.67 each