RTF means that you have to install a propeller before you fly, BNF means that the drone is completely assembled but you have to buy the controller separately. While the unit might seem like a toy, you have to register it with the federal aviation administration.
You should note that to make a registration you should be at least 13 years old. After making the registration you will be given a unit identification number that will be displayed in your unit. The registration can last for up to 3 years. We specialise in the making and selling of drones. Whether you are looking for a small drone or toy drone we have plenty of them in our store. Visit the given links to know more.