Partial cascade damage, billing at VW prices?

I drive a golf3 and get new headlights from the partial cascade without excess. At VW, a particle costs a unit price 138 EUR plus installation. In the accessories it is significantly cheaper. Can I charge the VW prices as in the comprehensive with the insurance (see fictitious calculation on an expert report basis) at the VW prices, let me refund the money and, if necessary, with the VAT with the money only buy headlights or can this not be done in the partial cascade? r after pre-invoice the invoice amount? OH