There's lots of options for bar-end mirrors, their size/shape is going to determine how well they work. It's really not hard to install, you use a friction mount that expands inside the bar when you tighten a bolt.
You can spend varying amounts to get really nice mirrors, I personally like the Fenrir mirrors I got - great visibility, finish is surprisingly nice for a Chinese brand. The price for these raised a couple of times as I think they got more popular (when I got them they were $40). They make various styles, similar to other Chinese brands that do most of the main styles you see out there.
Amazon.com: FENRIR CNC Aluminum Alloy Cafe Racer Black Motorcycle Bar End Mirrors Side 22mm 7/8" inch Handlebar Mirror Universal Rear View For M8/M6 Standard Super Sport Naked Street Bike Cruiser Minimoto Scooter : Automotive
www.amazon.com
CRG and Rizoma would be two of the more mainstream brand options out there, they both have nice quality on their products.
