TBVH, it looks better than de EF equivalents. Yes, in RAW it actually vignettes badly, but from what I have seen elsewhere it actually has a larger AoV at the 24 mm position than a 24 mm lens, and the jpeg conversion crops the image to 24 mm.
IOW, it is meant as a lens for jpegs, which is just fine for its intended user group, especially at the price. It sells for € 349 over here, the RF 50 F/1.8 for € 229, and the RF 35 Macro for € 529. From that POV it is actually very reasonably priced.
For nerds like ourselves here it doesn't cut the mustard, but just like creating a good image depends more on the skills of the photographetr than the equipment used, it is a similar thing here. Not every home chef needs the top end of Japanese sushi knives or most expensive pans to create a good dish either.
@[deleted]: the RF 24-240 is a little better both in RAW and jpeg than this 24-105. I shoudl know - I own one as a single do-all walk -around lens ....
No, these lenses are not L-lenses, but considering what they can do and their prices, I wouldn't expect that either. They are more than good enough for casual shots, though.