Set Default Value

Private Sub Worksheet_SelectionChange(ByVal Target As Range)

If Not Intersect(Target, Range("A2:A18")) Is Nothing Then
'do nothing
Else
For Each cell In Range("A2:A18")
    If cell.Value = "" Then
    cell.Value = "0.00"
       End If
    Next
    End If
    

End Sub

the above code is for the specified ranges which you can change..so any cell you delete within that range will default back to '0.00'

let me know if it works for you