Over the years I bought most of the absolute plugins and expansion sets individually.
(Groove Agent 5, HALion 6, HALion Sonic 3, Padshop Pro 2, Retrologue 2, Prime Cuts, Neuro Mindset, Future Past Perfect, Colliding World, Metronomic Cinema, Granular Symphonies).
So I don’t have the following plugins and expansions packs.
The Grand 3, Rock essentials, Dark Planet, Hypnotic Dance, Triebwerk, Granular Guitars.
However, to upgrade from my collection to Absolute 4, I will have to pay a full blast of £300. 
So, Steinberg is considering just ONE of my plugins as an option to upgrade. Absolutely unfair to customers who already have more the one plugins and/or expansions packs.
Sort it out, Steinberg.