Apple 's iPhone App Policy

I have 开发者_Go百科read from some article that say's

Apple doesn't approve the application which Sell/Buy any physical items.

Is it correct or not ?

I am new to iPhone development.and don't know more details about Apples 's Policies.

Thanking in Advace...

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Look at the amazon.com app. You can buy physical items using that app.

So, the answer is "not correct"