[InvalidOperationException: Nullable object must have a value.]
System.ThrowHelper.ThrowInvalidOperationException(ExceptionResource resource) +56
Models.Item.get_calBasePrice() +1103
Models.Item.GetBuyPrice() +119
price_guide_Details.Page_Load(Object sender, EventArgs e) +4474
System.Web.Util.CalliEventHandlerDelegateProxy.Callback(Object sender, EventArgs e) +52
System.Web.UI.Control.OnLoad(EventArgs e) +97
System.Web.UI.Control.LoadRecursive() +61
System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +693
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