That being said, Amazon isn't much better nowadays and I have been pleasantly surprised by some items from AliExpress. However one should not expect western quality standard for most things...
I seem to get the 'delayed delivery' coupon every time even if the delivery is on time for example, and sometimes that coupon is worth more than the item itself for low value items.
It doesn't matter much anyway; I stopped buying there because I am a bit tired of too random quality that doesn't make the "savings" really worth it. For example, I bought a connected outlet that was half the price of ones from an EU brand but the app is pretty bad (data logging and display is terrible) and build quality worse. I also bought various RCA cable for an old amplifier and all of them were producing noise, I got a good one from Amazon (made in Germany) and no problem.