It's a BigBoy DRT-250, a cheap Chinese import, normal manual gearbox motorbike, not scooter, which probably already partially answers the question, but at 10,000km I have had no prior mechanical problems. It's been serviced by the dealer at 500km, 3,000km, and 6,000km, and should be due for one now, at roughly 9,600km.
When I start it, in neutral, and kick down to first, I can feel the gear taking, with a small nudge forward, but as soon as I pull off, it's as if I was still in neutral. I have to first push the bike around (down as many hills as I can find) while in 1st, then it improves a little, and I can ride around in first, but very slowly, even at high revs. After about fifteen minutes of this, I can start really revving the engine very high, and feel the clutch start taking. A few of those and I can get back up all the hills I've gone down, and ride almost normally. Sometimes while riding at a steady speed, in any gear, the clutch will slip for a second or so then normal riding resumes.
I find it difficult to believe normal wear will do a clutch it at only 10,000km; I've loosened the cable totally, so there is plenty play on the gearbox lever when the clutch is released, and I have only used the oil recommended by the dealer, Motul 20W50 mineral oil.