Natrogix via Amazon offers the Natrogix Green Superfood Powder for $19.99. Coupon code "8KM34JQG" cuts the price to $10.99. Plus, Prime members bag free shipping. That's $4 less than our May mention, $9 off list, and the lowest price we could find. It features features 32 organic real food ingredients, including spirulina, acai berry, and spinach.