I've been using it for like a week now. I went from L23 to L38. It took me maybe 6 days to figure out how to correctly use it. You can use user-submitted missions but I didn't want to do that because I would have to change my resolution, disable Aero, lower my graphics, etc. Once I figured out how to do it, it now takes me about 30 mins to record a mission and set it up properly for replays. I can then use that for 2-3 days before I take a new recording for a new mission.
I say it's worth it because the $30 sub price is good for one year so it's like $2.50/month.
EDIT: This one has missions and crafting combined -
http://i.imgur.com/GE0pa.png
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