Currently £9.99 at Amazon, couldn't see it cheaper elsewhere online. Free delivery to selected Tesco stores or add £5 delivery.
Keytween dolls also available at half price (£3.48) under clearance section
I have seen similar sets available in my local store (Shepton Mallet Somerset) at this price so possibly available instore.
Use the special key to flip open a scene from a Princess' palace. This bathroom playset comes complete with a doll, duck and fun bathroom accessories.