As much as I would like to have one of those pen guns, I simply can't justify it at today's prices. I have wanted one of these since I first saw one in a gun shop in the mid '90's. The gun shop owner was selling them for about $400 even then - which I thought was too rich for me. Since then, I haven't seen any being sold for less than $400 otherwise I would have purchased it. I just don't always get what I want - maybe that's what keeps this interesting for me.
I have a COP 357 too; wanted one since I saw one a friend had sometime in the mid '90's. Mine doesn't have the box, but I only paid $350 for it. I was able to buy a complete parts set which I keep with the gun; probably makes up for not having the box. I have never carried mine, but it's not out of the question.