Amazon offers the Pantene Pro-V Classic Care Daily Conditioner 12.6-oz. Bottle for $4.79. Clip the $5 off coupon on the product page to cut it to $0. Add it to your cart via Subscribe & Save to bag free shipping. That's about $5 under the price you'd expect to pay at your local store.
Be sure to cancel Subscribe & Save after your order ships to avoid being billed for subsequent shipments.