Fly off the shelves (4)

I think it could be either:

Which length description are you looking for?:

2,4

sell

'fly off the shelves' is the definition.
(I've seen this in another clue)

This is all the clue.

(Other definitions for sell that I've seen before include "Peddle" , "Exchange for cash" , "Dispose of, maybe in 23" , "disappointment?" , "Decorative edging" .)

I've seen this clue in the LA Times.

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