I would like to suggest for GOG store, in games page, in filters to add slider filter for prices. For example, I want to browse games in the price range of 15-25$, not more, not less.

Today I wanted to browse for AAA games, so I decided to filter games so I could see games only starting from 25$. Unfortunately, I couldn't find such settings in filters. Only option I found was "$25+" filter, however it still shows us lower priced games.

If you don't mind using user scripts, Ghorin created one that adds additional sorting/filtering options like that.

You can find their post about it here:
https://www.gog.com/forum/general/head_back_to_class_with_the_back_to_school_sale_aeaa4/post46

And/or get it from here:
https://github.com/ghorint2t/scripts

Thx, but I already browsed all their games and will be nice if GOG stuff will improve their filters officially.

Also one more suggestion for GOG:

Add authenticator protection in security settings.