What's the most expensive commodity in the world? Diamonds? Platinum? Illegal drugs? Erm no, it's probably railway station food. £10 a glass of water, £20 a Mars Bar, taking advantage of stranded and most often delayed passengers is a profitable enterprise.

Try to reclaim a tiny amount of your hard-earned cash without dying of starvation and dry-mouth with the Bite card. Flash it around Upper Crust, Millie's Cookies, Delice de France and all those other ridiculous pseudo-"European" food-shops for a 20% discount.

(You can thank the Kat for that tip - and Mailinator for giving you a disposable web address in case of spam-abuse)