Is aliexpress a safe website?

I want to buy a cosplay from there but im seeing mixed review about it being good or being a scam.
Update: I want to buy this one
http://www.aliexpress.com/store/product/Anime-Hetalia-Axis-Powers-Cosplay-Hetalia-Axis-Powers-Hungary-Uniform-Female-Cosplay-Costume-High-Quality-Freeshipping/206159_501591449.html
This is going to be my first time buying so im worried about the quality of it.
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