i got 100 and yes you do get 10000 gil and it was about on my fifth try, Big D. I went up to Queen Brahne and she says "The play was wonderful today, here i feel like giving you this." and hands over the moonstone.

i never knew you could summon things with a moonstone then, so i thought, "thats all!? look lady, i just impressed 100 nobles, and you give me a MOONSTONE!? I preffered the elixir you gave me last time!"

same thing at the mountain path, i took ages getting all the stones and i end up with another moonstone. I expected a megalixir or something.

thats my longest post so far i think......