What does "fly off the shelf" mean?

Question

Does it mean something sells out quickly coz it is very popular?

Answer 1

Yes, that is what it means.

Answer 2

Shelves Definition

Answer 3

TO sell very well.
The new iPhone is flying off the shelves

Answer 4

Yes, that's exactly what it means. Good job! ♥

Answer 5

it mans you don't go crazy and over react. its the simple way and easiest to understand way to say it that every one gets.