private void buttonEdit_Click(object sender, EventArgs e)
 {
     PriceDisplayer ed = new PriceDisplayer();
     ed.Show();
     ed.Display(price);
     PriceSelector.instance.Close();
 }
 private void createPriceBtn_Click(object sender, EventArgs e)
 {
     PriceDisplayer pd = new PriceDisplayer();
     pd.Show();
 }