I just went through the same thing. For me, a new prosteer track bar from Pep Boys was $64.99. Others might be cheaper and better but that was what was available. If I decided to only change the bushings, they were $13.00. Much cheaper for the busing replacements, but many more times the hassle. I opted to spend the extra dollars for a new track bar.
Once my old track bar was removed, I saw that my frame mounting bracket hole was wallowed out and that the #10 bolt was compromised. Lots of movement there. I couldn't see any problem with the old track bar bushing but I could see how there could be 2 - 3 cm movement simply with that wallowed out hole.
So, I used a super tight fitting HD washer on a new hardened #10 bolt and put things back together using the old track bar. Then I welded that washer to the mounting bracket so there could be no play as a result of that enlarged hole. So far, no more movement at that point.
I returned the new track bar.