I would say that this cost more than I think it should, but there's not a lot of other options out there, so maybe it's a bargain. Either way, this works great for installing shock seals, and I recommend it.
I figure if I am going to go to the effort to tear apart my shock I mine as well have this tool to ensure I don't cut the new seal putting it back together. This little tool is nice to make sure the seal doesn't get cut on the blunt sharp edge on the bottom of the shock shaft. makes installation quick too. worth the money in my opinion.