It's arrived, very quickly, but broken.
The board and frame is intact, but all 4 blade-tightening knobs are broken. That in turn has broken the whole tightening mechanism. Snapped pieces of plastic. The gas pressure thingo is also out of gas.
Just plastic though they may be, this was poorly packed. Can't say I'm being too fussy, I've had bigger heavier more fragile things come to be from the US well packed & intact. He'll be getting Ebay feedback that I hope he regrets.
Now, to see if I can squeeze a few bucks out of someone for this, because I'm going to have to buy new blades from Dunco.