While Natural Stack is far from being the most affordable online nootropic supplier in the market, they do offer really high quality products so everything balances out. Plus, you can get a 10% discount if you subscribe to a recurring delivery every 15, 30, 45, or 60 days. As for their one-time purchase pricing, you can buy 60 capsules of CILTEP Nootropic Stack for $128.85, 60 capsules of Smart Caffeine for $19.95, PreBiotic+ Resistant Starch Complex for $26.95, 90 capsules of MagTech: Magnesium Complex for $28.95, BioCreatine Optimal Creatine Complex – 120ct. for $19.95, Natural Protein: Whey + Collagen, 1lb for $37.95, Natural BCAAS with Beta-Alanine – 150ct. for $24.95, Vitamin D3 5,000 IU with Organic Coconut Oil – 90ct. for $14.95, and Antartic Krill Oil with 1.5mg of Astaxanthin – 60ct. for $31.95.