They used to cost around $450 to $500 until a while ago when their prices dropped to $299. Although JB-Hi-Fi currently has them back at $449 and no longer sell them for $299.
I own these headphones. I honestly cannot recommend them enough for portable use (bus rides, flights, etc). They are brilliant in terms of build-quality, looks, sound isolation, and more importantly sound quality and comfort.
In my opinion, they were arguably worth it at $450, definitely great value at $300, and honestly if you have the money for it, anything below that price is a steal for these headphones.
EDIT: Same deal as yesterday, but cheaper, so I just edited my post.
For those that were confused yesterday, these are the Over Ears (around the ears) Momentum 2.0
The difference between the over-ear and the on-ear Momentum's is not just the pads or their size. The drivers inside (the speakers) are completely different, the quality of the over-ears is significantly better than the on-ear ones or in-ear Momentum's. That's why they are a lot more expensive.
Here for AU$200. Local seller too.
https://www.minidisc.com.au/sennheiser-momentum-2-0-g-on-ear…