Either, this website is a scam, or (most likely) it is the equivalent of Harbor Freight. The Chinese are very good at making counterfeit parts for just about everything. We all know that these batteries are NOT genuine Autel batteries.
Nevertheless, some Chinese counterfeits are junk, while others actually work well. It's a chance you take if/when you order such a discounted item.
In the past, I found a great price for a Lithium Battery for one of my Motorola 2-way radios (the battery is normally over $100 USD). I got the battery I ordered. It said 'Motorola' on it, and looked exactly like my original Motorola battery. But, it only lasted for a couple of months. When I removed it, and looked at it very, very closely, I did find that there were very small differences between it and a genuine Motorola battery.
As I said above, it's a chance that you're taking when you order ANY heavily discounted item. It may last a day, or it may last 2 years; you just don't know.