As a fabricator I have to applaud those that can get that done for $600. There is about
steel $100 if your lucky
Machined parts (shackle brackets) $50
powdercoating $150
in just bits and subcontracting
that leaves $250 for fabricating the chassis mounts, forming the winch tray, forming the blade of the bumper, welding it all up and making it pretty. Sandblasting it. Getting it to the powdercoater. Getting it back from the powdercoater. Having a little left to cover marketing, insurance, rent, lunch, and etc. Never mind the fact that you've spent time designing a bumper that can safely be used in dangerous situations and constructed it with that in mind.
Not to try to be offensive Chris, but you're a smart fella and I'm suprised that you'd thing that this is expensive. Even with shipping the thing from Colorado it is still a great deal.
In complete full disclosure I do a fair amount of business with Rovertacks and do flog Keiths products and use many of them on my junk. This has nothing to do with my rant.