Sure, it's easy to use your bank cards when buying things abroad, but it's not pleasant to come home to all the additional fees and charges bolted on by your bank. One solution is to take cash, which carries its own risks, or sign up to a third-party issuer that tries to limit the damage to your account. Travelex, however, is aiming to cut those UK charges completely with the launch of its new "Supercard." While it's basically a pre-paid Visa debit card, it comes with one distinct advantage: you don't have to top it up. You can connect up to five of your own accounts, travel to a far-away destination and it'll automatically deduct your purchases using Visa's own exchange rate.