£5 postage even if you order 10 :D
Pound stretches always were like that. I noticed wilko sold better quality
be warned that this design of heater is prone to breaking. Those are halogen bulbs and they blow. The only time I have bought and paid for an extended warranty was for a product like this. Worth it as Argos gave me back my money 2 years later when the item broke. The only reason I knew to take out the insurance was because of sites like this, so passing on my experience.
Lots of heat :D
my local B&M had similar at £19.99 so maybe not available everywhere