Finally a way to search for games priced under 6$, I couldn't quite understand why that hasn't been implemented in GOG's own search filters.
With GOG's own search filters you can't even single out the $6 games, you only have the option to search for games "under $10" and if you do, GOG will display all $9.99 titles, too. :/
EDIT: Or maybe that's what you meant? I wasn't quite sure since there are also a few games cheaper than $5.99 now.