Blatently nicked from another forum but its a great deal:
Just bought a pair of the above from Amazon. Normal price is £138, because the're brown and not green they reduced them to £111 (good deal) then using a 20% discount code Amazon.co.uk: Clothing Subscription Sign-up price was reduced to £89 (great deal) total saving of almost £50!!!
Edited : its just the current clothing offer for signing upto a mailing list