While bumping around the net I found a craigslist-montreal listing with the same pictures posted on the same date as the kijiji post. So either he's in Montreal trying to sell it there too, or he just posts ads and tries to scam people. But really, who would scam people with a koto harp?!
I hope he gets back soon. He might not be back until the 6th.
I have enough patience to not be stupid about all this.