I found the ratings on aliexpress to be completely useless. as compared to aliexpress, even amazon ratings feel legit (which has probably the lowest reputation from my experience).
I had way better experience with local vendors here in Switzerland or even shipped from Germany for all kinds of qualities.
The local vendors here also have way better support and very quick shipping times.
As for the sellers, I either know them due to their other online presence, or I select them based on how good the descriptions are on the items they sell from a technical perspective. Reviews are also useful, especially those with more text, photos, and some technical comments.
A lot of the time though, Amazon is O(tens of pence) more expensive, and I just view it as a cheap insurance. (Amazon's returns/replacements is great IME; AliExpress's is unknown to me and frankly I assume it's bad, and for the sake of tens of pence don't want to find out.)
I would only use AliExpress to buy things you can't find anywhere else, which should help with counterfeit issues, AliExpress has seller ratings and what not, too. I've had some luck with BangGood.com for randomly produced NodeMCU style boards, and they have a US warehouse which helps with shipping speed (at additional cost).
What's the purpose of it? Does it have to be recorded & kept (in case police want to ask 'who bought x' or 'what did y buy' or something?) or is it just to check that the purchaser matches the billing details (fraud prevention?)?