It's cheaper and nicer to buy from simple graineries than from some faceless megacorp that's probably just Nestle, that's shrinking your boxes and not telling you as if you're a moron and can't tell.
Also the powdered fats lack the flavor that wet ones do.
In Norway these products usually don't have powdered fats. They will typically require that you add egg(s) and butter/margarin, maybe milk etc.
Here's the ingredient list for Toro Brownies, translated by me.
Sugar, wheat flour, reduced-fat cocoa, baking powder(calcium phosphate, sodium carbonate), coffee, salt, vanillin
I'm not sure about the fat reduced cocoa, for all I know that might just be what I think of as normal cocoa powder, and the rest are just regular ingredients anyone would use. No fancy surfactants and powdered fats etc.
But then there is even less point in buying the branded mix rather than individual ingredients that you can use for various recipes with ratios that you like.
The point is that I can make brownies, rolls, whatever I please without having a cupboard full of all kinds of crap like flour, sugar, cocoa etc that attracts bugs and expires and so on.
I buy one bag that's dirt cheap and has everything I need including instructions. And it just has the same stuff I would be using anyway so there's no downside. No scary ingredients. Just freshly baked goods on demand.
What I'm learning is that some people don't keep a stock of what I would consider "bare minimums" in their cupboard.
First of all, properly stored flour, sugar, and cocoa powder doesn't attract bugs. Glass jars that seal well, done. Hell even plastic tubs. It expires pretty rarely as well, surely you can just bang out a couple of loaves of bread before that happens?
Anyway, yeah, is it not like, a very normal thing to keep flour, sugar, baking soda, cocoa powder, salt, perhaps yeast on hand? Butter, oil, some pasta, maybe some rice? Like, how do you cook otherwise, just buy small batches of these things every time?