First post so please go easy on me :)
Shipping is free even for non-prime members such as myself.
It is best to choose 'every 6 months' and be sure to cancel the subscription after delivery.
The following are also available at the same price but a minimum of 2 is needed to subscribe,
Head & Shoulders Itchy Scalp Care Eucalyptus Anti-Dandruff Shampoo 620ml
Head & Shoulders Dry Scalp Care Anti-Dandruff Shampoo with Almond Oil 620ml
Head & Shoulders Smooth & Silky Anti-Dandruff Conditioner 620ml
Head & Shoulders Clean & Balanced Anti-Dandruff Shampoo 620ml
If you're a Prime member you can also get them at $6 with the $2 Shopback cashback offer + 7% cashback
Update: None are currently available