This is quite possibly the most overpriced beer ever (purchased at Peterborough station). 

I wonder whether the ridged design of the can means that three times as much metal is used in production. 

Or is the special shiny-ness achieved by intensive hand polishing? Or, perhaps, the can is actually silver plated. And the paint is really enamel. 

Even if all of the above were true, £2.99 a can is a bit over the top.