Ben 10 Alien Force Creation Chamber.
I have been looking for this everywhere but refused to pay between £25 and £30 for it.
I went into my local Tesco (In Liverpool1) and saw it on offer for £14.98, so I snapped it up.
You also get 5 figures with it, which usually sell for £5 - £6 for a set of 2!
I scanned the receipt but my stupid laptop is playing up!