Why does everyone get so bent out of shape if a bike sells for more than they think it's worth? It's worth precisely what people will pay for it, and I'm guessing that's somewhere around $350, especially if you've got a big enough audience. Why on earth would you sell it for any less than people are willing to pay? That would only be unfair to you as the seller.
I wouldn't buy it, but that doesn't matter. If other people here think it's overpriced, they don't have to buy it either. So long as you're not misrepresenting anything in your description, make whatever you can off it and you can sleep well knowing you sold it fairly.