Seems to be around £20 - £35 elsewhere. Thought it a really good price @ £9 & included in the 3 for 2 offer. They also have a few similar ones, will pop links in 2nd post.
I've taken the info from Amazon as Tesco has hardly any
Dimensions 2.21m x 1.88m x 0.86m (87in x 74in x 34in)
Includes water slide with landing mat, wading pool and water sprayer.
Water sprayer attaches to garden hose.
Drain plug and repair patch included
Suitable for ages 3+