Until they make a return and the store pages are visible again you can download this package including PDF files, store screenshots and banner/logo images for all 4 Unreal games that where available until December 23, 2022.

https://mega.nz/file/l0ZGlK6C#jBanihaNvUWAQOVzOhG3G6tucCI_QZIQ4A7L50a19fM

Rubbing salt to the wound.... I managed to download my Unreal Gold, and with your archive I feel bad for missing out buying the other games in the series :D

Possibly redundant, but here are additional archives:

Download:
https://archive.org/download/gog.com/game/unreal_2_the_awakening_se.tar
https://archive.org/download/gog.com/game/unreal_gold.tar
https://archive.org/download/gog.com/game/unreal_tournament_2004_ece.tar
https://archive.org/download/gog.com/game/unreal_tournament_goty.tar

View contents:
https://archive.org/download/gog.com/game/unreal_2_the_awakening_se.tar/
https://archive.org/download/gog.com/game/unreal_gold.tar/
https://archive.org/download/gog.com/game/unreal_tournament_2004_ece.tar/
https://archive.org/download/gog.com/game/unreal_tournament_goty.tar/

I recommend downloading the file first, then opening index.html locally.
Opening index.html from within archive.org produces less than accurate results.

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Similar page saves available here:

https://web.archive.org/web/*/gog.com/game/unreal_2_the_awakening_se
https://web.archive.org/web/*/gog.com/en/game/unreal_2_the_awakening_se

https://web.archive.org/web/*/gog.com/game/unreal_gold
https://web.archive.org/web/*/gog.com/en/game/unreal_gold

https://web.archive.org/web/*/gog.com/game/unreal_tournament_2004_ece
https://web.archive.org/web/*/gog.com/en/game/unreal_tournament_2004_ece

https://web.archive.org/web/*/gog.com/game/unreal_tournament_goty
https://web.archive.org/web/*/gog.com/en/game/unreal_tournament_goty