public ActionResult SaveProductSpecialPrice(ProductSpecialPriceViewModel model)
 {
     _productPriceService.SaveSpecialProductPrice(model.ProductID, model.SpecialPrice ?? 0, model.PriceGroupID ?? 0, model.StartDate, model.EndDate, CurrentTenantId, CurrentUserId);
     return(_GroupSpecialPrices(model.PriceGroupID ?? 0));
 }