Yes. Government does not issue more taxi licenses, so the only way to get one is to buy it from someone else. The price is set by the market. A taxi driver can

Yes. Government does not issue more taxi licenses, so the only way to get one is to buy it from someone else. The price is set by the market. A taxi driver can easily make 2,500€/month in Madrid, especially if he/she hires another driver/s to drive the taxi when the main driver is resting.