Apparently it's about 4kg (8ish pounds for you US guys) lighter, which is a lot.
Cost in USD works out to about $1,300.
Worth it IMO. It's sounds and feels like a different bike. A nice low end note, you'd never think it is a single 375cc. Sounds like a bigger V-Twin. Full throttle has an angry growl, its heaps of fun. Slowing down from any rpm range on idle makes it spit like crazy, love it!
Ya sorry about the camera, I was playing back on my phone and it sounded crap. I didn't realise it was because of the phones speaker.
I'll see if I can do a fly by, or throw my phone in the tail bag, and sound record.