This is basically three filters for the price of one - the circular polariser itself is worth about £30!
You get a UV Protector, Circular Polarising and 812 Warm filter and a nice pouch to hold them in.
I had this kit for my old 35mm kit and have just bought one for my digital SLR.
Please make sure you check your lens filter size before ordering!
They have plenty in stock according to the website.