As has been said, the parts are about $10-$20 including the tool you need. As long as your labor is free it really isn't all that bad, but it is not a "fun" job in my book. I love working on my jeep, but that is not my favorite job.
The larger the lift the easier it is.
I recommend reading 5-90's report on how to do it.
And also replace the oil pan gasket with a new 1 piece style at the same time.
I think it took me about 4-6 hours to do it, a number of years ago.
My brother (professional mechanic) can do it in much less time.
Michael