Liebherr review: Spares

I've been trying to get the door slide for my Liebherr Premium Bio Fresh fridge. Eventually I have found Coolectric who have it but they can only sell it to me in a spares pack for £39.20 + surcharge for credit card and P&P. For a cheap bit of plastic which costs no more than 50p this is a complete rip off. I will also throw 90% of the spares away so what an environmental waste. The fridge is only 6 years old. There has to be an easier way...