bar end mirrors

Hi there! I was wondering if more T100 riders have the problem of their mirrors (original) moving inwards when increasing acceleration or at high speeds? (above 120km/h - 75 mp/h). And if anyone has a solution for this... The original mirrors are (in my opinion) weirdly fitted with a single...

Anybody try fitting a clamp on bar end mirror that doesn't run like $200? The OEM part is $100+ per mirror and same with the Rizoma's and so on... Wondering if anyone had something to suggest that is gonna be a quality product that isnt gonna break the bank. Thinking maybe the bike masters. Pic...