How much could I get for my violin?

My violin is 8 years old...but is in mid-condition. Nothing is broken and it plays perfectly fine. I don't have the bow considering it broke...but I do have the case. I only played it for one year, but my sister played it for two years. I hope to sell it for around $350, but I'm not entirely sure yet. So if anyone has an idea about how much it's worth, just let me know.