old3eyes:allan: it's just part of the deal, no ongoing subscription required. Once you connect and your device is registered to the Tivo service, the EPG is part of the deal.
Wouldn't bet it will stay that way forever. If sales drop they have two options. Start charging a monthly or yearly service fee for the EPG or bail out of NZ.. They could of course open retail sales up to every big box seller and IPS as they do in Ozz.
They couldn't do that as it specifically states the following on the telecom tivo website
What about additional costs?
Once you've paid the full amount for the TiVo media device it's yours to keep and there are no on-going subscription fees.