Drones

1. affordability

1.1. getting cheaper?

1.2. what is the price now

1.3. any extra fee?

2. who use it

2.1. researcher

2.2. young people

2.3. male more than female?

3. why use it

3.1. Advantages

3.1.1. price

3.1.2. portability

3.1.3. automony

3.2. application

3.2.1. product delivery

3.2.2. aerial photograph

3.2.2.1. data collection

3.2.2.2. taking photo/firming

3.2.3. recreational use/toy

3.2.4. Military Application