Different persons have different standards (some have higher standards while others have lower standards) and it's up to every person to decide how good of a build quality components are safe to use in their PC. But keep in mind that PSU is
the most important component inside the PC since it powers everything.
Since i care a lot about all my PCs, i won't put a mediocre quality unit, let alone a low quality unit, into my PC that fails to meet ATX PSU standards set in place for all OEMs to follow, so that the PSUs are safe to use and doesn't damage other components. In fact, i've gone above and beyond regarding PSUs in my PCs;
Some may call me nuts

that i payed €206.80 for a (great quality) PSU that sits in my Skylake build (Seasonic SSR-650TD) and my latest PSU purchase for Haswell build (also great quality) costed €205.50 (Seasonic SSR-650TR), while i would've been safe with a (good quality) PSU that costs €80.50 (Seasonic GX-550). While that can be true and i could've saved a lot of money, i feel safe and comfortable that my two main PCs are powered by the best offered by Seasonic. Only for my 3rd PC, old AMD build, i slightly reduced my PSU quality standard and bought a (good quality) PSU that costed €101.50 (Seasonic PX-550).
I won't suggest expensive PSUs in builds when the budget is way restricted. But i still suggest getting a PSU that at least meets all the ATX PSU standards (like the ones i linked above).