I work in a jewelry store and we use the service of another jewelry store to provide engraving on certain jewelry.

We've contacted a local company that sells the GravoGraph M20 machine which comes with seemingly easy to use software, but it costs a bit over $7000.

We also found this machine on AliExpress for $1700, but I checked YouTube for videos about it and it seems to have software that's much less intuitive.
So my questions are:

1. Will the Chinese machine work or is it a waste of money?
2. If we end up buying the Chinese machine, what's the most intuitive software we can use with it?