I've gotten my rock sliders, corner armor and side sliders, my Tuffy, and several other items from Jason at 4x4groupbuy. VERY easy to deal with and good prices to boot. He's not just some schlep selling parts. He owns Jeeps too (almost bought one of his he had for sale a while back).
He has group pricing to his advantage, but does have the manufacturer ship directly. He isn't making much, if anything, off of shipping.
My Toys by Troy corner pieces were NOT cheap to ship either, but I still came out ahead after comparing options!