I got a value kit containing all the products from Head Spa incl. the Shampoo (220ml), Conditioner (220ml), Extra Cleansing (100ml) and the Massage Spa Mask (70g). I paid about US$34 incl. shipping from eBay (Alphabeautyuk).
When I tried the shampoo, conditioner and mask out the first few times I wasn´t really impressed. To me they felt pretty average and even didn´t smell as good as the deep cleansing shampoo.
However somehow after using this series for many times, usually daily, I felt that the products really give super soft shiny hair. The shampoo and mask smells really lovely, the conditioner has a slightly more powdery scent than the other products.