Buying a classical stereo is similar to buying a youngtimer car. There will be a technical examination and a visual survey. A comprehensive documentation with detailed pictures should be available. Repair invoices with corresponding serial numbers are a good expertise for the technical state. Such an object should be collected personally, if possible. International shipping is expensive and generally not the best option, regarding to the weight of the braun stereo and the speakers. There is a high risk of transport damages.
Once you buy a classical stereo system, there occur questions regarding the payment. Will you receive an invoice? Is it a private sale or a commercial sale? Will there be VAT on the invoice? Or is pricing according to § 25a UStG subject to the differential taxation. How can we arrange international sales? Will there be a right of withdrawal for online purchases according to European law? Is the European consumer protection policy liable?