Legit. Was trouble free.
I will say, don't assume their disassembly for shipment or inspection catches everything. If a bike has anything to it that is more "unique" like an integrated bar setup or TT bars or something.........pull up the online manual for it, disassemble or verify those areas. Check torques on things you didn't have to torque yourself on assembly.
I think an original builder of my bike did it wrong, and Pros didn't catch it. The Trinity has a set of barrels that space out in the base bar for the bolt/washer combo to press against and not dig into the base bar. These were not installed on my bike and I caught it when adjusting the stack height for the first ride. I had started without them and it dug a tiny bit, but I got lucky and caught it when I added stack spacers and saw it.
Not a big deal, just understand you're buying a used bike and some of the inspection aspect is on you also.