The worst SSD I ever bought was made by Biostar. I bought it because I needed a cheap one to throw into a test build. It was stupid slow. Come to find out, it was one of the SSD’s that does not have any cache. I ended up throwing it in a drawer
Here is a link 690 baht is about 22 USD.
I found that Crucial, for SATA SSD’s, are pretty good on the price to performance metric. I have used them in several systems in the last couple of years, and they have been rock solid. Not the fastest, but still much faster than spinning rust.