I am. Depending on what you want to run, they can do a passable job. There a a number of options available on Ebay.
The TB6560 boards, especially the 3-axis ones, were marginal. Lots of complaints, even by builders that knew how to handle boards without frying them with ESD. I had one of the boards and used it to run my Seig X2 mill. It did OK. Rapids were slow because you had to stay around 24 volts. Mine finally died after the lightning strike across the street. I lost 2 of the 3 axis.
I got a TB6600 based boards. The TB6600 boards are a lot better. While the 6560 boards were poorly designed, the chip itself was marginal. The 6600 is a better chip and the drivers are more robust. The Chinese claim 40V @ 5A for the 6600 boards, but that is absolute max. 36V @ 4A will last a lot longer.
I replaced my 3-axis board with individual drivers and a breakout board. The next time we have one of those CLICK, flash, BANG lightning episodes, I can just replace what fries, rather than the whole mess. I'm using an Ebay breakout board. They are supposed to be terrible, but it's been in there for a year now.
I don't need speed. I can putter around the shop while the mill creeps along. I don't need speed of light rapids or cubic inches a minute through steel. If you plan to make megabucks with CNC, then you're gonna want the 60V drivers... but you'll pay. Speed is expensive.