In the current Carhifi edition you will find the installation in an Opel Astra GTC. Total price 2431€ without installation. As far as so good. But 13410,- (without installation) only to operate a front system is very exaggerated. Here too I would have liked to hear your opinion. The costs for this are as follows: Two Audison HV Venti Thesis, 12600,- Hertz Mille ML 280S (HT), 460,- Hertz Mille ML 1600 (TMT) 350,- Mfg Micha