Namely,
8Ball Nutrition's Booster A3P - $2 ($1.60 with Gold Card).
8Ball Nutrition's Herculin CNO-3 - $2 ($1.60 with Gold Card).
Of course, these items were set to expire by the end of this month. But, I ended up getting 3 jugs of Herculin CNO-2 and 2 jugs of Booster A3P for around $10.
The Lemonade version of Herculin is quite tart, tastes almost like the Lemon Ice version of Gaspari's Size-On.