Steering wheel shakes at highway speed, garage says suspension, I'm not sure


Got the steering wheel vibrating noticeably once I get above 100 on the E11, which is most of my commute. Took it to a garage near DIP and they immediately said suspension work, quoted me over 2000 without even putting it on a lift properly. Something felt off about the diagnosis so I'm doing my own homework before going back. I read a writeup on how to fix a car suspension problem near DIP to see if the symptoms match what I'm feeling, but I'm also wondering if it could just be balancing or a bent wheel instead. Has anyone had a similar shake and what actually fixed it? I don't want to spend 2000 on suspension if a 50 dirham wheel balance is the real answer.