Living in London is expensive. In fact, moving to another country is probably always expensive. Visa fees, deposits, home essentials, and let's not forget the exchange rate.
We do, however, get a break from time to time. No ATM charges for instance. Anywhere (makes you wonder why US banks impose those fees to begin with). And cell phones are cheap. On a pay-as-you-go plan, we were paying just over 10 quid a month which included free Skype-to-Skype calls (a godsend when our internet wasn't working). Even after the currency conversion, that's far less than something similar in the States.
Even so, 3 Mobile (our provider, and the only one with Skype capabilities) decided that 10 pounds a month was too expensive, and had a sale: 9 pounds a month, more minutes per month than before, and free phones that are better in pretty much every way than our old ones. If anyone is actually bored enough, here's Sony's page about our phones; plain ol' black for me, 'hazelnut' (read: lights up orange) for Teriann.
9 pounds a month! At the current conversion rate, that's less than 13 dollars a month! Fantastic! Now if we could only get our rent to follow suit...