I've been using a RAM handlebar mount + X-grip phone mount for a few years without issues. Total cost was more like $45 and not $100, but I'm not sure if prices are the same in Vancouver vs. USA.
This looks to be somewhat similar, but with 3 arms to grip the phone instead of 4. It also looks like this mount has a fixed angle which may or may not work for you.
2012 Yamaha Super Tenere
2001 Honda Blackbird
2007 Honda 919
49/50 visited on two wheels. 1 more to go!