Got one of these last time it was this low. The price varies from £1.99 to around £5. This is a really big figure filled with bubble bath. The picture doesn't do it justice.
Technically it's part of the 3 for £12 promotion which has probably been posted, but you'd be a mug to buy it as part of that offer when it's so cheap alone.
I searched in case it was already posted but it didn't come up, I'm sure someone will find it and say it was posted six months ago or something.