gregmcc:
Somewhere in the settings on the Tivo's it describes the service level as "lifetime", so the manufactures have defined this, so it would be fair and reasonable to expect exactly that.
I've seen that too. In the US the EPG and all associated services are a monthly/annual subscription but obviously they get lots of value for money out of it so am guessing "lifetime" differentiates the AU/NZ system from the US subscription model.