UK seller DV247.com is selling the full version of GA5 for £130 (inc, standard delivery and VAT!) - £40 more than your upgrade price!
Steinberg PLEASE LOWER THE PRICE OF THE UPDATE! It shows poor business acumen.
Until you do I will NOT be updating GA 4 to 5. It’s a simple as that! It should be (as other users have been suggesting) around £50