A lot of folk on here, myself included have had poor service from HMV. However, a good deal is still a good deal. These aren't advertised as reduced in price, but they are. I think most stores are still selling them at £100, but reserve and collect is an easy way to get round this.
The best feature of the headphones are that they are light and very comfortable. If you use headphones a lot, this is important. They also sound pretty good - a lot Skullcandy models don't. Although, in ear phones are much more portable, these do come with a carry case as well as a good quality microfiber cleaning cloth, which aren't cheap. Finally, they are very well built and look great.
You'll find it hard to get better sounding headphones at this price. Go to HMV and try them. I've had £50 worth of HMV vouchers I've been trying to spend for ages and I've now finally succeeded.
They're also available in brown and in white, but I haven't checked whether these are the same price.