According to the home page (linked down thread edited: linked by you!) it is fully diy. They gave a bill of materials, construction directions, etc, but you source and build it all yourself. They list an estimated cost of 7000 usd/eur depending on location.
You can build it for way lower than that - in their BoM they use quite expensive distributors like Misumi - if you only source your steppers from other places that's already hundreds saved. If you buy the laser tube and power supply from China it's few thousands shaved off (the only problem is the risky shipping of fragile laser tube).
As far as I can tell it's more expensive than getting a cheap one from China in that power range. The China ones vary in quality and usually require some hacking but this one you need to assemble from scratch so probably still less time investment.
Yup. If one had the cash to burn (puns are mandatory to clear out the sigh-ing glands in the sub-cockle nether-regions) in a commercial laser cutter, there's always Trotec.
