In this first episode, the team go undercover on the high street and reveal what the UK's biggest phone networks don't tell you when you sign up to a new contract. The programme also investigates some of the UK's largest retailers' loyalty schemes to reveal the worst and the sneakiest. Meanwhile, M&S steak costs twice as much as Aldi, even though they use the same suppliers. Supershoppers puts their steaks head to head in a taste test, with surprising results. And can targeted toners really take aim at specific parts of the body, or is there a much better way to spend your cash?