When asking yourself why did Pietta come up with this pepperbox, remember the European market where "Real" guns are like unicorns to most folks, and the're not all looking for authentic reproductions of American antiques.
I agree that the Europeans have to "resort" to BP firearms because of draconian laws across the pond concerning metallic cartridge arms, but I believe you are wrong to think that there is not a market there for repros or the real thing.
I was turned on to a French site courtesy of our fellow member, Ringo. I think we all can get an idea of what those folks go through to acquire some of their BP guns:
http://repliquesoldwest.superforum.fr/forum
Some of the members speak and write very good "American" English, but most of the posts are in French, as is the entire site. I use the translator tool on the Google Toolbar and I get a fair translation using that, but it is not at all verbatim (the translations for barrel, cylinder, and nipple are very different). I learn something new every day!
Ringo is my language guardian angel there and, as I post in English there, he will translate my posts into French. Quite a courtesy!
The French BP afficienados have a bit of a different take on replica "American" pistols, and
many of them own
original guns, and they are not inexpensive. They also watch GB and other sites, are willing to bid, and have the money, but it is such a convoluted mess in order to get even a BP C&B revolver (perfectly legal to own in France for anyone at least 18 years old) to them as no US seller wants to ship to an international address.
Ringo had found a pistol on GB (I believe) that he wanted; I found a shipper in NC who would do it and forwarded the link to him, but he found it would have cost him well over $1K in fees, in addition to the purchase price of the pistol, and other paperwork SNAFU's that put the exercise DOA.
If you take an interest and register there, go to "Le Bar" and introduce yourself as a friend of Ringo (he is a mod). I'll bet you a shot of Jack Daniel's that you will be gladly taken in. They seem to like Americans interested in their situation/predicament/problem.
Just my $.02 worth.
Jim