However, if you plan on using the drone for a commercial purpose then the quadcopter would not be enough. You will then have to go for a drone whose machinery is capable enough to complete the task be it photography or package delivery.
Design Another tip that might come in handy when you are buying a drone is to have a close look at its design. Generally all the UAVs have the same basic idea; they fly without the need of an on-board human pilot.