ah so sorry about that! it's probably because of the fact that the bags are 99k instead of an even 100k. that and i have discalculia so i miscount things all the time. ^^;; im so sorry!
I don't think you're rude when you say "don't post". If you want to make a gallery with nobody posting but you, then they shouldn't be posting except you. There should be a rule to protect that right to reserve.