The spiderman bouncy castle is £7.49 in my local Extra store (Slough-loads on shelf) reduced from £29.99
Just had a look at Tesco direct and it's £14.98 online
Features of Product:
For super heroic antics on dry land - have a bounce-tastic time with this cool Spiderman 3 inflatable bouncy castle. Approximate inflated size: H152 x W160 x D185cm. Not suitable for children under 3 years. Ensure only 2 children play on the castle at any one time.