Make sure to grab their monthly catalog....it shows what Sports Nutrition brands are marked down for the month. They usually have great deals on EAS and Met-Rx. This month, I believe that OptimumNutrition is reduced quite a bit.
The VitShoppe near me has an "about to expire" table where things that are within 30 days of expiring are 50%-75% off. I got two 20-packs of Cytoplex last week for $12 each.