Ebay Germany : I need help

Hallo
I am new to ebay and I want to make some money Now I have only an ebay account (limit : 500 iteam und 5000 euro ) so I have some question : can I buy from website like aliexprese large quantities (500 pcs) example iphone case ? I would have no problem with customs ? and how much I have to pay customs fees? and what are the websites that you advise me which are delivered to Deutschland ?
Thank you and Sorry for my bad English

You can order from Ali, but it mostly comes from China, so you will have to pay taxes and maybe customs fees. Up to 22€, it is tax-free. Up to 150€, it is customs-fee-free.

VincentVega said:

You can order from Ali, but it mostly comes from China, so you will have to pay taxes and maybe customs fees. Up to 22?, it is tax-free. Up to 150?, it is customs-fee-free.

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And there is no problem with the quantity ?