The mirrors were only 14$ and mount up pretty well. They are fairly narrow but good for quick glances down to see if there’s a car approaching. Not going to give the best visibility due to size. But the fit the purpose and blend in fairly well. Almost come out flush with the handlebars, they protrude just slightly.
I bought these too. They are definitely cheap, but they do work very well. Would have been cool if they were convex, but you can't really get convex mirrors at this price. I only installed one on the left handlebar. I'm happy with it