What can you buy with HKD$4.2/ USD$0.5 in Hong Kong?

You can buy a package of full of enjoyment：

access to historical piers;

harbour views of both the Kowloon and Hong Kong Island side;

8 minutes of peaceful ferry ride;

cool nice breeze;

performance by sailors mooring the ropes;

also you can have beautiful sea view with either blue skies, sunset, or night scene.

Who can beat this deal?