FWIW, better add what length you want. They range from 18" to 40" and both flex-head and fixed. Some eBayers, (no one here, of course) will try to sell you a sliding T-bar as a breaker bar.
I posted a similar WTB a few while back and got nothing in my price range. The good stuff must be few and far between. I've seen a couple at pawn shops with the swivel pin replaced with a bolt and they were asking $50.
thnx, jack vines