Friend broke wing mirror. How much should I charge him?

I own a 1996 ford mustang. My friend was leaning on the wing mirror and it snapped off at which point he apologized profusely. I took it to my local mechanic without telling him and they charged me $140 to fix it. We're both in high school so he obviously doesn't have a large income. How much money should I ask from him?

Matte Black vs Gloss Black Vinyl stripes?

So I have a Ingot Silver 2014 Ford Mustang and was wondering what stripes would look the best on it. I heard that gloss shows every little imperfection (scratches) while with matte black, you can't wax them. I'm leaning more on matte black just because I know that seeing the little scratches on the gloss black over time will really irritate me.