I think the limit on viewing wasn't Mana's choice, but that of ePlus. I'm guessing there may have been some kind of contractual stuff involved, which is why they ended up using ePlus and all. Mana was extremely apologetic about it all. And it seems most people figured out a way to get around the restriction on tickets.
As for "Pageant", I've never seen any mention anywhere of a maxi single. Not on Moi dix Mois website or any other site that has records of the recordings. Mana was very good at always listing any limited editions and there is no mention of one
http://moidixmois.net/Discography.html. Plus since that seller isn't posting any photos...
And actually, anyone who is looking for the single, Flowers mentioned that it's available again on Amazon Japan. It's also available on Midi:Nette. Seems Mana decided to release it again, but never said anything about it. It's available for 1200 yen and Amazon Japan will ship it to the US. So I'm guessing they will ship it most places in the world.