Yeah, not cheap, but my company let me choose between that and a top of the line macbook, and since my previous macbook was a catastrophy I switched setup entirely.

The weight isn't too bad, I have it in my backpack commuting by bike in hilly Norway. But maybe too heavy for a shoulder bag. The battery time is useless, yes, so that's the big tradeoff. But since I bike instead of commuting by train or so, I never used my previous laptop not plugged in anyway.