Amazon has 7.1-Oz Cellucor C4 Sport Pre Workout Powder (Watermelon, 30 Servings) for $11.20 when you 'clip' the 25% off coupon on the product page and check out via Subscribe & Save. Shipping is free w/ Prime or on $35+ orders.

Note: You must be logged into your account. Coupons are typically one use per account. You have the flexibility to manage your Subscribe & Save subscription at any time after your order ships. View Subscribe & Save filler items and our current Subscribe & Save Frontpage deals to unlock up to extra 15% savings when you have 5 or more items in your current monthly subscription.