Can't comment about the folding version, but these, or identical offerings are always £10 or less as a few others have said.
Anybody know if it's possible to swap the gas connection on the Halfords stove for one with a proper screw on regulator?
Aldi are going to have something very similar in from Thursday @ £9.99 https://www.aldi.co.uk/adventuridge-portable-gas-cooker/p/083365209723200
I'm surprised Gaz put their name to this, I've always thought their products were pretty decent. I guess they want both ends of the market. I've got a Halfords one and it's ok but I'd use with caution, it's a very slapped together affair the way the canister attaches.
Wouldn't touch one myself: https://www.expeditionaustralia.com.au/2016/03/new-safety-warnings-for-butane-gas-cookers/