In this episode, Justin helps a couple who are up from the seaside to haggle over the cost of a posh dinner and room in a swanky hotel in the millionaire's playground of Mayfair. It's nerve wracking for them, but they're keen to give it a try. Will Justin's expert advice give them the results they really want? Justin also takes Secret Shopper to the party capital of Liverpool to help one of the city centre's oldest fancy dress shops: Lilli Bizarre. Plus, industry insiders explain how to get more bang for your buck.