In the UK, I still pay more for my 3G network than my broadband, byte for byte, but at the current rate it won't be long before it is equal.
Currently my broadband would be twice the capacity for the same price, but that is a lot better than a few years ago, so this time next year I think it could be the same. Especially since the bbc iPlayer has upset the broadband services that say 'Unlimited' (one of my pet peeves). They may have to start telling the truth.