$125/household - that's an amazing deal. We're blessed with some high-quality programming from the CBC here in Canada but would happily bump in a contribution to add BBC to the mix.
I'm not quite sure how you got that number, as £145 ≈ $181 USD. In any case, here in a US border city I get free access to CBC and PBS which is rather convenient. As I understand it, those on the other side of the river get access to both stations as well, so the local affiliates target both countries. BBC America and BBC World News are only available through cable providers, as far as I recall, though they seem to be included in many cable packages (as is CBC and obviously PBS).
As a pedantic note, BBC America shows British TV including programmes from non-BBC stations.