Real newspapers have couple different ways they make money:
- Sell the content subscriptions or one-time price
- Sell classifieds ads - people pay to place an ad in classifieds
- Sell ad space for real ads - mostly glossy magazines
- They are given money from external source - government subsidies or sponsors
Is there any notion of how the Wizarding world newspapers - The Daily Prophet and The Quibbler - finance themselves? I seem to recall someone paying money for The Prophet, but can't find it in the books.