Amazon offers the Suave Kids' 12-oz. 2-in-1 Shampoo / Conditioner Bottle 6-Pack in Surfs Up for $9. Clip the $1.50 off coupon on the page and order via Subscribe & Save to knock it to $7.05. With free shipping, that's $4 under what you could expect to pay at a local Target.
Be sure to cancel Subscribe & Save once your order ships to avoid being billed for subsequent shipments.