Product Info below. I did a quick search and these are normally going for £49.99.
John Lewis are doing them for £29.95 + £3.00 (standard delivery)
The Denon AHC-452B in-ear headphones have a canal-type design that brings the sound directly into your ear, as well as fitting snugly in it. Additional ear buds are included so you can be assured of a comfortable fit.
An acoustic optimiser structure helps bring out ideal acoustic characteristics in your music, by adjusting sound pressure balance around the diaphragm. The 0.7m cable is designed to be tangle resistant and is made from Pure-OFC oxygen free cooper, to ensure the music arrives in good shape, and with no degradation. A 0.8m extension is also included.