It's a little bit cheeky that the mount is $20 on the US store and £20 in the UK. I don't know if there are additional taxes that have to be added in the UK, but it's a pretty poor exchange rate they're using there.
The bundle is $30 or £24, yet the Blizconn virtual pass was $40 or £25, you'd think the same taxes would apply to that purchase as to mount/pet purchases.
I'm still annoyingly tempted to buy both, though. I've always been a mount collector and now that I've discovered the joy of pets it just makes it even harder to resist