To be fair, the price-related comments in this thread are largely to do with the US / UK price difference (a recurring theme) rather than the price per se.
I've seen plenty of people in the US complaining about the price, the same thing happened with the 5d3 too. All I've heard is "it's $1000 more than the first one blah blah blah, waaaaaahhhhhh, waaaaaahhhhhhhh."(sniffle, sniffle). I don't know remember stuff like this happening back in the day, professional products get released and consumers cry about how expensive they are. Then they go all over the internet marginalizing the product (that they've never used) and telling everyone/themselves "oh it's not really better than the last version" to make themselves feel like they're not missing out on anything. Happened with the 5D3, is happening with the 24-70 II now and I guess will continue to happen, but it's terribly annoying. If the 24-70 I is just as good to you just go get a 24-70 I and shut the f*(% up.
Edit: for the record this wasn't directed at AdamJ or anyone here in particular, I posted this right after reading a bunch of ridiculous stuff on YouTube, then again YouTube is a giant cesspool of ignorance so I probably shouldn't take it too seriously.