Supplement Hunt offers two Universal Nutrition Liquid Carnitech 16-oz Bottles for $39.98. Add two to your cart and apply coupon code "Carni16" to drop the price to $19.99. With $5.99 for shipping, that's the lowest total price we could find for this quantity by $14. It features USP grade L-carnitine construction and purports to increase endurance and maximize oxygen uptake.