when i reach 50+ miles per hour the steering wheel starts shaking, someone help. on 2000 Nissan Xterra

It started about a few months ago how much to fix if worth it or sell car.

Asked by for the 2000 Nissan Xterra
check tire condition and balancing. also check steering and suspension for looseness or play
1 more answer
On my 2000 xterra it was lower ball joint. I was told u have to replace the whole lower control arm