i do not see any %s posted on wiki for the 12 vs 99 stacks. if someone can provide me with this, i will do it. right now it is doing this:
Jeuno / Nashmau / Tavnazia Auction Houses
Single item fee = 1% of the seller's asking price +50 gil.
Stacked item fee = 0.5% of the seller's asking price +200 gil.
Al Zahbi Auction House
Single item fee = 1% of the seller's asking price +100 gil.
Stacked item fee = 0.5% of the seller's asking price +400 gil.
Aht Urhgan Whitegate Auction House
Single item fee = 2% of the seller's asking price +100 gil.
Stacked item fee = 1% of the seller's asking price +400 gil.
Other Auction Houses
Single item fee = 1% of the seller's asking price +1 gil.
Stacked item fee = 0.5% of the seller's asking price +4 gil.