Welcome Visitor! Please take a few seconds and Register for our forum. Even if you don't want to post, you can still 'Like' and react to posts.
You can buy the parts, buy the tools, read some books, watch some YouTube videos, buy and erect a temporary shelter, if necessary and still come out cheaper than that and have it done right.
I don't intend to spend half that much on my next used axle. It'll have LS, disc brakes, 31 spline axles. Might not be 4.10, but it'll also have a matching front diff and the rest of a 5.0L AWD Explorer attached.