Aliexpress is retail arm of alibaba.com, they dont sell items, like alibaba they just provide platform to sellers to sell it online. now some sellers are good some are bad. my only experience i have ordered a CD changer drive for my A6, postal time to UK wasnt that bad in a week it was delivered. But the item was completely junk, it was physically broken part and checking the packing which was very robust and safe and not damaged at all. So they intentionally shipped me a broken changer, I contacted the seller through aliexpress, asked about pictures, delayed responses tried to give me part refund and asked me to keep the item, I did not agree. I found out if you post back the item to them they really dont like it may be cause of custom reason, so when i said to lady I will post this item back to you at my own cost, she hurried in refunding me full and request me not to ship it back.
it wasted a month in the process but i got my money back minus the international transaction charges on bank card.
so before buying do check feedback for sellers, not all are honest.