Yeah quality control on cheap printers is always going to be an issue.

When people say: 'here's two cheap machines, which one is best'.
We invariably try to encourage them to buy a more expensive machine.
As this rarely works the best we can do is to suggest machines that have better reviews round here.

I would also suggest that this is not a good time to buy a cheap machine from china.
Many factories have closed down or been running on light workforces.
So, yeah, quality control is going to be an issue for the forseeable future, and a lot of the printer supply companies are going to be using stuff they would probably usually send back or scrap.

I do apologise as this aspect of the current global situation has ONLY JUST occurred to me :-(

Sounds like you lucked out, so commiserations.