Yes, I know, sorry, guys, I should have made a picture of the information... I found it curious they have a set a price for each of these upgrades (club to first, economy to club, etc.) and they are willing to print it for regular use and general information.

The price of the upgrade from Club to First was about € 900 per person, which I thought wasn't expensive, for a 12 hour day flight. However, my partner and I briefly discussed it and decided we couldn't be bothered.

I was reflecting later, perhaps I don't need the additional confort and service of First, perhaps even that lower € 900 is still not cost-effective in my humble eyes...

Anyway, wanted to share this with you.

By the way, the flight in Club was great, the CSD was excellent, as the whole crew. I already send my thanks via the site.