Traditional Culture Encyclopedia - Photography and portraiture - What's the difference between the three series of National Geographic Photography Package, Freedom Explorer and Africa?

What's the difference between the three series of National Geographic Photography Package, Freedom Explorer and Africa?

=。 = National Geographic defines the price according to the model size, so does the quality. I didn't see anything particularly good there. If applicable, the surface water price is around 500. Why is it so expensive? If it's for beauty, buy it. I really like the national geographic gray bag ~