Aliexpress, yay or nay?

[Larry Edgerton]

Ditto, if your a pro and sharping 100s per month but most DIY people do not need a $200-400 sharpener.

Double Ditto.

[Bill Dufour]

I tis like ebay or most of Amazon. It is not selling the stuff. It is just a add clearing house with some help on transferring money around. So it depends on the seller. Some are good and honest. Some are incompetent and some are crooks. headquarters tries to keep things honest.
Once a companies reputation gets too bad they rename themselves and start over. Look for companies that have been around for a while with good reviews. Harbor fright invents new brand names, fort eh same old stuff, about every five years and drops the old names.
Bill D