CeX has some very cheap deals at the moment for used headphones. I'm slightly nervous about buying from them as I've only ever bought video games from them in the past, but they have Sennheiser Momentums for £170 and Amperiors for £115 .
I know it's not the most popular brand around but from what I've read still around, they are some decent cans.
The SkullCandy Mix Master Mike are at 99 € on Son-Video.com (delivery in the EU but site in french only)
On Amazon.es. I posted it on the "official" Deals Thread on April, right after |joker| posted his review on InnerFidelity.com (and he actually liked both).
For ~55 Euros it was quite a steal! I didn't know this thread existed at the time, though. :(
Have a look at the camelcamelcamel price history -> click! <-
Thank for the tip! It seems that i partly accidentally ordered myself a pair I thought that i have to put down my credit card number and bank verification before order but suddenly i just had lot of spanish text telling me my ears will be very happy in 10 days and my wallet will hurt. Again, 4th earphones in month. Thanks Head-fi