The deluxe 12 cm Gormiti characters are an unbelievable £1.99 at the moment. I was so surprised I actually asked them to check at the counter. Each character as some interchangable accessories (such as a hammer fist, drill or normal fist for Nick). I was able to get the Nick (Rock), Lucas (Forest), Toby (Water) and Magmiom (Lava) from the Stevenage branch.
Also, the 15cm sets were £4.99 and they had 5 piece sets of the smaller Gormiti for £2-3 each.