These machines come with an instructions manual so that anyone could assemble it easily and quickly. They are perfect for expert pilots who already have the radio equipment (the transmitter and the receiver) and are only looking for other parts to complete the structure of their vehicles.
All these UAVs are available off-the-shelf in the price range of $50 to $3,000 and even more depending on their specifications, model, and overall design. Most quadcopters are very robust and durable and therefore they last for a long time if handled properly.