Tarketta, I'm not sure where to start, apart from looking on YouTube. It would be handy it was in the shops.
Does anyone know if it’s sold on High Street?
Unfortunately not, it may be available in stores in Canada but it's only being introduced into the UK now and only online at least for the time being - that link I posted was about the only decent one I could find with swatches but I'm sure more info will become available soon as the foundations are launched.