IMO, it is all priced well. The sliders are the highest percentage compared to new price, but the finish is also a more smooth than the bumpers.
I ran the same setup as these from 00-06 and used them heavily the entire time (not the ones I am selling).
The only damage I ever took was when I laid the rover on its side. :-(
I do believe this is the strongest stuff out there. The rear bumper design is perfect for coming off ledges/rocks. On my old setup due to some complications of how my rig was positioned, I winched off the main portion of the brush bar vs the D rings, it did not budge. I am not sure how safe it was if there was a failure, but it is a sign of how strong this gear is.
Rockware work is very strong.