Like Amber B. Said, don't order anything exprensive. I lost 40 € trying to order knifes. They promise total refund if order not received in 30 days etc... In reality, you won't get your money back. Probably you won't even get your negative feedback published on the sellers page. And there is no way to contact Aliexpress, if the "open dispute" time is over.
If you need a cheap spare cellphone charger or something, order from Aliexpress. But be prepared to receive a low quality product. For example, the clothes they sell are cheap looking in real life. And very small - smaller than described.