A friend bought a Chinese machine for his small business - Acctek 6090. The quality of paint finish was poor, the machining was accurate enough but with a poor finish. A lot of holes looked as if they were drilled with a handheld drill, and the "target" for one of the limit switches (inductive proximity) was the shank of a broken tap, which also needed adjusting. It came with a Mach3 demo licence. Took a day or two to unpack, adjust, and generally configure but it is now a useful and profitable machine. My friend bought a real Mach3 licence (for which he had budgeted) and also arranged his own transport which was cheaper and better than the manufacturer's offer. For the price, a good machine. There may be an element of luck in this, but as long as you accept that what you get is slightly closer to a kit of parts than a ready-to-go machine, it can be a cost-effective way forwards. I wouldn't buy one because I like building stuff myself, but my friend probably paid not much more than I spent buying bits for a slightly larger machine and saved himself a lot of work (which is important for someone who is using the machine to earn money). A year later, he is still happy with it.