Great bargain at Fopp. Series one for £8 and series 2 for £8 - these usually retail for around £18 each online. If you're a fan then snap it up! Not sure how long they will be available at this price, probably until they clear but when I was in they had a lot there.
I bought them at the London store but I imagine they must also be in their other stores too. Click on the link to check store locations: http://www.foppreturns.com/stores/