These were originally £20 but they are now selling them with 75% off so although not worth £20 they seem to be ok for £5.
I bought one tonight, called at Tesco for some maize kernels (£1.09 for 500g) and gave it a go, not expecting much.
I was quite surprised. There were only a few unpopped kernels and they only took a couple of minutes if that from switching on to serving.
It has a scoop for measuring the corn then doubles up if you want to melt butter whilst the popcorn is cooking (see the little handle sticking out at the top).
* Cheaper popcorn curnels in carribean section too*
thanks to sb44 on mse