I got lucky with them, usually they charge if you don't supply CNC files directly. I made vector drawings to-scale, but don't know solidworks or such, so they definitely had to do some conversion and recreation to some degree, but I didn't get charged for the additional file creation fee. Gianluca and I went back and forth probably 50+ times over a number of months. Definitely great to work with, and like you mentioned, easily cheaper than sourcing locally or taking a risk with aliexpress/etc.
If anyone with a CFA hasn't tried the ubal2baltube boards, they add just the right amount of "tube" flavor, and still keeps the CFA detail/slam. I splurged on nice Siemens E288CC tubes (not quite the same as a 6922, double heater and plate current) which meant some additional tweaking of the tube boards, but I think it was worth it. Compared to basic EH 6922 they are a clear improvement. They ARE a bit taller than a 6922 though, so they may end up sticking out the top of the chassis, we'll see, ha! Could look pretty neat with some tube cages, and make swapping easier. Like this: