It is a lot of money.
imho Tudor finish are on par, or in some cases a little about Omega.
The movement is a tricky one - but how much does this really add to a watch? In the Omega SMP300's Omega have this difference at £2400 for the Auto and £1500 for the Quartz, so I'd say that's £900!!! For the benefit of having a Co-Axial ETA - the 8500 were a bigger premium in the Omega AQ's, when the went from 2500 movement to 8500!
So, you could either say the heavily modified ETA in the Tudor makes the watch a better buy and lets it hit a much cheaper price point - or other in-house movement watches are better value.
At the end of the day the movement will be very well done and keep great time. The watch looks great and hopefully it will sell reasonably well.