I'd guess they're probably all coming out the same factory, built to whatever spec and with whatever logo the buyer wants.Looks pretty much identical to mine aside from the branding.
It comes with 3 versions of the software for windows, but I don't think it's compatible with GRBL.I wonder if it runs on grbl, if it does then lightburn is a possibly software upgrade (totally not worth it with a mini diode but as I have a 50w and a 40w running on it it could be fun to add to the stable)
I've bought it to put logos on some handles, and the supplied software will do that, so I'm not going to start experimenting. Given the cost, if it breaks, I'll just buy a new one.