Advanced drones: The most advanced drones cost well over $1000. They have multiple rotors starting from 4 and even going up to 6 or 8. They are more complex and provide more and better functionalities. The camera quality is the best of the lot.
The question is where to look for each type of drones? There are several online stores dedicated for the sale and purchase of drones locally as well as internationally. Majority of the online drone retailers are situated either in the USA or in China, but a comprehensive research will reveal drone sellers in almost every part of the world.