I've been looking at the prices of the Dre Beats PRO's as I'm considering purchasing a pair.
I've noticed these are significantly cheaper on the French Amazon site in comparison to the English site (currently at £349.00 on UK site for the same Black/Silver variant). The cheapest variant on the UK site are the white ones at £279.99, which is not a desirable colour as it gets dirty in no time!
You may be able to purchase them at a cheaper price if you pay using Euros and let your bank convert the currency for you?
On eBay refurbished Beats PRO headphones are selling for around £180 but they are not guaranteed to be the genuine article (lots of fakes knocking about that look just like the genuine versions).
Thought this may help somebody who may be in the market for a pair of over-ear headphones.