It was a black Friday sale on Aliexpress. I don't think you can get them for that price anymore.
Thanks to your comments, I was able to find some samples at that price. I have ordered them, and we'll see how it goes.
If you can get away with just lubing the springs, it might be alright.
Just because it's a low-priced light-tactile, doesn't mean it has to be bad. I suspect it might be okay with 57-58.5 G springs, but we'll see.