Supershoppers Anna Richardson and Sabrina Grant examine the price of our most popular coffees in two of the biggest high street chains. The programme also investigates the difference between expensive branded phone chargers and cheaper alternatives, with some shocking results. And, as gin and tonic is revealed as the nation's favourite at-home cocktail, are trendy upmarket tonic waters - which can cost up to seven times as much as supermarket versions - really worth it? And can aficionados tell the difference?