erro de sintaxe query C#

Estou com esse erro :

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quando vou executar o query da isso :/ Help me plz

private void materialRaisedButton2_Click(object sender, EventArgs e)
{

 using (NpgsqlConnection connpg = new NpgsqlConnection(connectionStringpg))
 {
 connpg.Open();
 string query = "INSERT INTO shop (good_id, item_id, item_name, price_gold, price_cash, count, buy_type, buy_type2, buy_type3, equip, tag, title, cupon_l, cupon_v, set) VALUES (@good_id, @item_id, @item_name @price_gold, @price_cash, @count, @buy_type, @buy_type2, @buy_type3, @equip, @tag, @title, @cupon_l, @cupon_v, @set)";
 using (NpgsqlCommand cmd = new NpgsqlCommand(query, connpg))
 {
 cmd.Parameters.AddWithValue("@good_id", materialSingleLineTextField8.Text);
 cmd.Parameters.AddWithValue("@item_id", materialSingleLineTextField9.Text);
 cmd.Parameters.AddWithValue("@item_name", materialSingleLineTextField10.Text);
 cmd.Parameters.AddWithValue("@price_gold", materialSingleLineTextField11.Text);
 cmd.Parameters.AddWithValue("@price_cash", materialSingleLineTextField12.Text);
 cmd.Parameters.AddWithValue("@count", materialSingleLineTextField13.Text);
 cmd.Parameters.AddWithValue("@buy_type", materialSingleLineTextField14.Text);
 cmd.Parameters.AddWithValue("@buy_type2", materialSingleLineTextField15.Text);
 cmd.Parameters.AddWithValue("@buy_type3", materialSingleLineTextField16.Text);
 cmd.Parameters.AddWithValue("@equip", materialSingleLineTextField17.Text);
 cmd.Parameters.AddWithValue("@tag", materialSingleLineTextField18.Text);
 cmd.Parameters.AddWithValue("@title", materialSingleLineTextField19.Text);
 cmd.Parameters.AddWithValue("@cupon_l", materialSingleLineTextField20.Text);
 cmd.Parameters.AddWithValue("@cupon_v", materialSingleLineTextField21.Text);
 cmd.Parameters.AddWithValue("@set", materialSingleLineTextField22.Text);
 //15 colunas
 cmd.ExecuteNonQuery();

 LogSKTL.getS().info_warning("inserido dados na tabela Shop");
 LogSKTL.getS().vermelho("══════════════════════════════════════════════════════════════════════════════════════════════");
 }

 }

 }