Is there a tip to get even lower prices displayed in the DB best price search?

Choose off-peak hours

For travellers who are not bound to specific departure times, it is advisable to select train connections in the early morning or late evening hours. Trains are usually less crowded at those times and generally cheaper. If you are not tied to a specific travel day, you can choose off-peak hours and, for example, avoid traveling directly before the start or end of weekends, holidays, or public holidays.