The deduction of points there because of the (subjectively) quite poor processing, especially of the slide-on cover. It just does not sit neatly, especially when transporting the game is very large. Is the cover when working behind the instrument I just did not feel like pushing on a solid surface. For comparison I have a Casio fx-991ES next lie, because it feels much better. I realize that the same 2 star deduction are plenty there, but I must also pleasant to work with them ...
Another note: The "GT" in the product name stands well for Britain, an "it" easy for English (International). Although the 85GT was increase over the 85ES Plus easily drilled, it is not the "successor" as my Amazon has said, but a for the market in the UK matched (also available as on the packaging: Recommended for England, Wales & Northern Ireland).