Yes, thanks for clarifying. While the price increases are not directly related to the buy-out, there certainly hasn't been a corresponding decrease in price by 30% now that they've moved away from in-app purchases. I suppose that was more my point. But yes...the VAT issue is why we're going to see an increase in the cost of apps/songs in the near future. I wish Apple's comic offering was a little more robust through iBooks, because they offer some better deals than Comixology did. But the beauty of Comixology was the simplicity of a dedicated app for that purpose, not to mention the handy cell-by-cell reading method.
To be clear - they had to open UK and EU stores so that people here could still purchase stuff in local currencies once the in-app purchases vanished (people are wary of buying in dollars for some reason). Once they did that, VAT was liable, but it's probably Luxembourg VAT (where amazon is registered) rather than UK (and thus lower). I've been exploiting the exchange rate to undercut the in-app prices by buying from comixology.com and that route has now been closed to me.
They didn't have to open the UK store at all, but once they did, they have to charge us some VAT...