How many official (not playtest versions) sets do you own?
I get six of each set and give away 4 to playtesters. So, 2 of each set. In English. Except there are couple old expansion copies I haven't given away, due to not having enough playtesters at the time to give them to, and then the playtesters haven't all picked up their copies of Adventures. I never got the standalone coins product, but I did get Base Cards. And I have some random non-product stuff - a canvas bag from HiG, a little wooden treasure chest, a container of mints. With promos again I keep 2 copies of each.
I am technically owed six of each foreign language set. Jay sent me a few different ones early on. They were cool to see but man who has the space. And you can't give them away. FFG, a company not willing to wave its hands on anything contractual, sent me copies of Infiltration in 3 random languages, like Chinese, Portuguese, Korean? What do I ever do with those, man, the game doesn't even have useful pawns or anything for me to cannibalize. Anyway I said, it's okay Jay, I do not need more foreign copies. Dominion is in a bunch of languages at this point, with a bunch of expansions in some of those languages, so I have turned down a gigantic pile of boxes. I did get one copy of the first Japanese retheme.