haha. I just replied to Anchang's PM that he sent me about this, but didn't see he had made a thread too.
I'll reply here as well for those that also want to know. I got my A pendant in 2005 at her concert in Hiroshima. At Ayu concerts it is common for bootleg vendors to be on the street leading up to the venue and they have a lot of unofficial merchandise like pictures, mousepads, posters etc. Unfortunately though, that vendor in Hiroshima is the only time I've seen the A pendant for sale, so I'm glad I grabbed it when I did.