not really, unless you’re implying the fancy hotdog vendor paid for the development of said hotdogs, which they didn’t
games don’t belong to valve
The keys that put the game in your Steam library are. And that’s what those pricing guidelines are about; Steam keys, not the actual game.
But when I asked Valve about this plan, they replied that they would remove Overgrowth from Steam if I allowed it to be sold at a lower price anywhere, even from my own website without Steam keys and without Steam’s DRM.