Never bought one but looked hard at them as well but felt the old saying “you get what you pay for” would end up biting me if i did. Just like you couldnt bring myself to spend $400+ on one so found these and im super happy with mine.
I ran the Jebao CW-55 watt one off of amazon and it works, but after running it for about 8 months I just opened it up and found the plastic inside was breaking down just like other people had warned in the reviews.
If you buy it for a budget build as I did, just be aware that it will work but for a relatively short lifetime.