He probably could, he goes to several of those auction houses and scours ebay, weapon sites, and probably even craigslist for another potential sale. He has tons of encyclopedias and books about unique swords and the artists who made or continue to make them. Custom weapons are always the best as much more devotion is put into the forge.
I don't personally have his email or phone number, so I'd have to ask my dad when I see him later.
And if a country can ban something fun, they usually do these days.