$150 phono stage and $500 phono stage can be absolutely the same, but with different label and different box. Price is nothing in this case (in this category at least) and can’t be a guide.
I agree. There is always an exception. Same thing applies to any audio gears. There is always a giant killer.
But from my limited experience, I have not had $150 phono stage that sounds as good as $500 phono stage. I'd appreciate it if you recommend me a few. I am in need of at least one more phono preamp and I don't want to spend more than a couple of hundred dollars. My current phono stages are Yaqin MS12B, MAGI Phonomenal, and Phono stage in Plinius M16P preamp. $150 phono stage that sounds close to Yaqin would be nice.