3-Pack 28oz TRESemme Moisturizing Shampoo $6.23 at Amazon
Amazon has the 28oz TRESemmé Moisturizing Shampoo With Moroccan Argan Oil (Smooth & Silky) for $7.79 - 15% off coupon (check "Save an extra" box, eligible on first S&S order for this product) - 5% off with Subscribe & Save (can cancel at any time) =
$6.23 with free shipping.
Roughly $1.82 per bottle.
Original Source of Info