I think that price is about right... I know I got them a bit cheaper than what 4x4parts has them listed at (cant remember the website, but I do have a reciept at home)
As for installing them, if you have any mechanical abilities at all, do them yourself, it's a really easy job. I've posted links to a series of pics that XPLORX4 has on his website a few times on this board... I can search it down again if you need.
I know someone else makes them for our trucks besides Warn (I want to say Superwinch??) But whoever it is, I know will make Vengeful cringe, and tell you DONT DO IT! I think most of us run with the Warns.