Update 09/12/2014: I have the customer now, as requested in the comments, let the relevant data come. Because I want to remain correct, I would like to take this opportunity to correct the prices precisely. First, estimated 209 and not 230. Reduced but was then not by 50 percent but to. 129 These prices are gross prices. Bought the machine was in February 2014 for 443.09. I will report on whether and how the customer actually respond to my complaint.
Update 2/19/2015: As early as a few weeks ago was referred back to us by the Customer again 50. We have now therefore defacto 80 paid for the rubber collar. Nice that we were come to meet there. But that's still quite a lot. The basic assessment of the first paragraph the change of course nothing. Because hardly anyone complains sustainably, so methodically pocketed at least about 129 euros ...