Converting to 2 decimal places in sql query

In the following code below I want to take 80% of the price for each item and return a total amount. It does this fine but doesn't round to 2 decimal places I'm using SQL CE edition so I can only use money as the field type.

I have tried  this "("SELECT BookID, MemberID, Title, Author, (Price=Round([Price],2) * 0.8) As Price FROM [CashOutDB] Where MemberID = '" + m.MemberID + "'", con);"
but the select isn't returning anything so I assume its wrong. Any tips or suggestions would be great.

public static void LoadCashOutList(ListView lv, Member m, TextBox txtTotal, Label label1)
        {
            SqlCeConnection con = BookStoreDB.GetConnection();
            SqlCeCommand comm = new SqlCeCommand("SELECT BookID, MemberID, Title, Author, (Price * 0.8) As Price FROM [CashOutDB] Where MemberID = '" + m.MemberID + "'", con);
            con.Open();
            SqlCeDataReader reader = comm.ExecuteReader();

            decimal cashOutTotal = 0;
            while (reader.Read())
            {
                string[] data = new string[5];
                data[0] = reader["BookID"].ToString();
                data[1] = reader["MemberID"].ToString();
                data[2] = reader["Title"].ToString();
                data[3] = reader["Author"].ToString();
                data[4] = reader["Price"].ToString();

                cashOutTotal += Convert.ToDecimal(reader["Price"]);
                ListViewItem liv = new ListViewItem(data);
                lv.Items.Add(liv);
            }
            label1.Text = " Hello " + m.FirstName + " " + m.LastName + ", Here are your books avaliable for cashing out";
            txtTotal.Text = "$ " +  cashOutTotal.ToString();
            con.Close();
        }

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