http://www.kufatec.de/shop/en/index....3289A 4PK'
Just found this, it says €32.54 but when you go to basket its €27.34 + delivery.
Not sure how much delivery is as I'm at work and you need to checkout to find out. If you factor in €10 delivery and an fx rate of about of 1.3 eur to gbp then thats about £28.72. thats almost 20% off dealer price.
the cup holder cassette is used in golfs and passats so a quick trip to the scrap yard and probably pull one out for a fiver. that cassette thing looks identical to the one i have in the front of my Mk4 golf, even the clips and everything is in the same place, so i might check over the weekend and see if it fits as i have a spare one.