We prefer to purchase organic milk, which can be expensive. Here's how I get it for half price.
Check dates at your grocer, talk to the stock person and find out how many days prior to expiration the milk is discounted. Also learn the time frame that the milk is discounted. This way you can be to the store right as it is being marked down to get first grabs.
I am able to get organic milk between $2.00-$3.00/gallon this way.