Mens Lee Cooper jeans half price for 1 week only - in store. Bootcut, regular fit and straight leg, from £9 - £12.50.
It's a Matalan card holder offer, which is free to sign up for, in store, you can start using it straight away for any of the other offers detailed in their brochure (can be viewed here [pdf]: http://www.matalan.co.uk/pws/images/content/reward-card/landing/100121/January2010.pdf
). You can also have the brochure sent through the post (usually monthly), or opt out when you sign up for the card.
Some of the other offers at the moment:
3 for the price of 2 on men's hoodies, jeans and polos
2 for £15 on selected ladies knitted sweaters
Introductory price of £10 on ladies jeans
Introductory mix and match 3 for 2 on nursery accessories
See the brochure link above for more offers.