Germany's Customs

R​‌‍‍‍‌‍‍‌‍‌‌‍‍‍‌‍‌‌‌‍​esearch Germany's customs/conventions in regards to bargaining (haggling), tipping and gifting. Explain e​‌‍‍‍‌‍‍‌‍‌‌‍‍‍‌‍‌‌‌‍​ach of the social transactions. There is no maximum amount of references so please use what feels necessary​‌‍‍‍‌‍‍‌‍‌‌‍‍‍‌‍‌‌‌‍​.