Noble the 3rd
Not sure about this pack of 6:
On the Planet fireworks website they sell for about £22... almost £4 a rocket :O... but probably can be bought cheaper elsewhere.
Launched the second of my pack earlier tonight. Personally I find the bang the launch woosh to be the same as cheap supermarket rockets with not much of a tail in the sky. The bang is a lot louder than what you find with supermarket rockets and the burst is 3 or 4 times bigger than the cheapest.
Supermarket rockets range from 50p-£1 each in a pack. In comparison, for the louder bang and bigger burst, these Sky Burst rockets are probably not worth it at the nearly £4 each RRP price.