How should I write down the amount when I declare customs?

customs

I wonder how you write down the amount when you file a customs declaration. For example, if you purchased 700 dollars, do you have to write down 100 dollars because 600 dollars is duty-free?

Or should I write down $700?

I don't know which is right

6538 2018-06-12 Gentleman

A. 1

You can spend $700

Gentleman 7 years ago 0

A. 2

You can write the total amount of purchase

Lady 7 years ago 0

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