They're not terribly expensive for high-end wireless headphones with active noise cancellation. Sennheiser's better wired models start at this range (HD660 S my current favorite, is about the same price).
It doesn’t make sense to compare these to the wired Sennheiser cans. These are targeted towards a completely different market. I’d be surprised if the sound quality comes anywhere close to HD660S.
Not really a valid comparison. If you buy a pair of high-end Sennhiesers, they'll last many many years. I still use my HD580 from the 90s. They also sell all the necessary spare parts and are easy to repair (mine have had new cables and pads). An Apple product be will be e-waste in less than 10 years, the glued-in battery will start failing in less than 5.
