Honest review about AliExpress' mystery boxes: is this a scam?

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Has anyone purchased mystery box from this seller? If so are the gifts worth it? : r/Aliexpress

Are Aliexpress Mystery Boxes Real? - Best Selling Aliexpress Products at your Fingertips

Mystery box from AliExpress

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Mystery box from AliExpress

is this seller trustworthy to pre order this item? : r/Aliexpress

Mystery Box AliExpress – chance to save up to $800 or scam