You can pick them up at most big stores for around £10, think B&M have them.
Pretty sure I saw single burners in ASDA Woodchurch the other day at this price. I was a bit hacked off because I recently bought one at Argos for £15
In a time of universal deceit - telling the truth is a revolutionary act. George Orwell
When the debate is lost, slander becomes the tool of the loser. Socrates