Tony the electric tailgate is around £450 on the Rline. The rep told me the if you press boot release on the fob it pops it open around a inch for you to manually pull it up. And you need to manually close it.
I ordered a Rline as standard, only because I can get the car around 9th of November. Otherwise I would have added the boot pack, but he told me factory orders are up to 12 weeks away