Hi Brian
A question worth asking and some useful information in response. Apart from the mainly superficial problems that have been noted the only way to determine the underlying quality of the lathe would be for someone with a good understanding of lathes to give one a thorough test drive. Possibly unlikely.
The main problem that I see will be for someone with no knowledge of lathes buying one and then having endless problems with the machine as they attempt to use it. Price being the ultimate tempter if you cannot afford to buy from the major sellers.
I have bought many tools both very cheap and very expensive over the years. While all of the very expensive ones are still up and running, so too are some of the cheapest although there have been notable failures. Like you, and I expect most people on the forum, I buy what I can afford at the time, sometime putting off buying until I can afford a better model.
The problem with machine tools is that even the lowest cost tools are expensive and if you have no reliable source of advice you can end up with a very expensive lemon. I wonder how many potential purchasers thinking of buying the Vevor or similar will read this or similar threads before committing to buy?
Pero