Buying PC parts from the local Chinese market

So, I have access to TaoBao, which is basically AliExpress but for Chinese residents. I recently watched an LTT video where he purchased a $300 prebuilt from TaoBao, and it seems alright, some things were kinda sketch, but it was extremely cheap. I was wondering if it is worth it for me to perhaps try my luck, and if so, which parts should I 'try my luck' with? Thanks!