Check Facebook or elsewhere... Facebook has tons of info on Chinese printers.
I just bought an omtech! I went into it knowing it'll need lots of setup and work. It's a step above true chinese lasers, but way, way lower than trotec.
It arrived with one of the limiters broken, so the machine kept grinding... Had to tape it on. So far I've cut 10mm acyrlic on it nicely though. Definately a lot more user learning than a trotec is .. which is good and bad. Good because before I she'll out 50k on a machine, I'd like to learn how they work, and this is the best way to learn how they work... You need to fix everything in the Chinese ones
If you bought a Chinese one, who h it sounds like... You need to learn to do a lot more reach on your own though.