Hi Neil, ya well the good stuff is like $60 @ 4ft, The guy put some cheap particle board treads on there before, it is already buckling. For what i can tell the nosing is nothing really special, half moon doweling glued and finished. Not worth it for me.
Does nosing really prevent tripping? Maybe it causes tripping too?
I think carpet or cork are better general solutions for bedroom stairs because they don't slip so much. If you get a nice wood stair case, then you'll need small carpet mats attached to each tread or risk breaking your neck, good grief!