I've already explained that at £500k the difference is £12.5k. At £950k the difference is £32k.
Quite staggering really.
Is it? it's a 2.5 or a 3.2% increase.
If you had the choice between spunking £950k for a house in Bristol or £950k including the additional tax in south wales you're still going to get a lot more house this side of the border.