makes the standard edition fall just under 30€. historically this has always been the cheapest way to get XIV's expansions until like a year after release.
the code is supposedly for "XP users" only but i think you get that status just for creating an account? idk that's how it worked a few years ago

standard: https://www.greenmangaming.com/games/final-fantasy-xiv-dawntrail-eu-pc/
collector: https://www.greenmangaming.com/games/final-fantasy-xiv-dawntrail-digital-collectors-edition-eu-pc/

i have been informed GMG does regional prices at least on this, the game's page is different than the ones i linked but should show up in a search query https://www.greenmangaming.com/search/?query=dawntrail