Caffa89

Hi guys I have the chance to buy this bike that runs but won't select geers ITS up for £100 has 8.000miles on the clock and comes with a brand new after market exhaust. Would this geer problem be an easy fix as I know the selector itself is pretty cagey. I would really appreciate some input guys thanks in advance

Lexmoto 125 geers won't select I have been offered this bike for £80 will it be an easy fix or not worth the hassle