Hi Chris, to answer in order:
It is simple in theory, though to get an oem finish takes patience and a bit of technique. I'm used to doing full panel external wrapping and even I took about 2 hours to complete the work. Trim removal is very easy with a plastic trim removal tool (not a screwdriver lol).
The costs can vary, the carbon I use isn't cheap but it looks more realistic than any other wrap I've seen.
It's pretty durable, it won't wear but damage is the only potential issue though it'll be no worse then the original wood. It's a semi permanent covering I suppose, it'll last years if applies well, bit if it does mark then you can always rewrap it.