Summer Sale prices for UK/Europe-based Hauptwerkians can be found here for HW licences and upgrades:
http://en.midi-organs.eu/index.php/shop ... /hauptwerk
...and here for MDA sample-sets:
http://en.midi-organs.eu/index.php/shop ... ital-audio.
UK sale prices are valid until 10:00pm UK time on Friday 31st August.