I have received news that the HP300s+ is EOL (End-Of-Life) and we cannot place any more orders.
No one is really mourning - this was another brand's model labelled with HP's badge - but neither in philosophy or hardware it was a HP unit at heart. It did not even have RPN. On the other had, it had the looks, at least in the "+" version (the original was really ugly). It was the second cheapest calculator in HP's line-up. Only completists may be interested in getting it.
It is a good calculator, do not misunderstand me; but as many others in the market.