Expensive? You get what you pay for.
Another top quality product from AMP Research (I also have their power retractable running boards). Mechanism and cast mounting bracket are nicely powder coated. Supplied fasteners appear to be OEM-quality plated for corrosion resistance. Assembly and installation couldn't be more simple. I had to tweak the truck's lower bumper attachment (one bolt) for clearance when extended, easy. Simple operation, functional and sturdy.