First I'd like to say many people are getting frustrated because it is hard to understand its site.
Ali really should have a local place in the USA to handle its American customers.
But the fault lays on us a bit as well.
We all want the best for the cheapest, Well the old saying "You get what you pay for" comes into play. I found if I start my search with "Highest Rated" sellers and then look for a good price, I have almost no problems at all.
DO NOT JUST LOOK UNDER CHEAPEST PRICE FIRST.
Second, When I did get ripped off (Before I learned this lesson) The nice lady from Ali spent almost 3/4 hour to walk me through and get the seller to pay up.
I have been buying through Ali for about a year now.
It is getting better, And is still a great deal if you are careful.
CHECK YOU YOUR SELLER FIRST.
AliExpress is the same as eBay, They do not sell the items.
There are bad sellers out there. "Let the buyer beware" is the standard in any sale.