Well, compared to WoW's $15 (though you could get it as low as $13 if you payed more than 1 month at a time), FFXI's $13 was nice if you didn't need mules. But due to space and the way the AH works, you pretty much needed mules which took you over that $15. I too hope it's a straight cost with multiple free alts.
WoW - Quel'dorei
Main: Tancoo (80 Tauren Enhance Shaman)
Other: Saraah (63 BE Paladin)
Raymund (47 Troll Hunter)
FFXI - Carbuncle
Raymund - 45 DRG, 42 PLD, 26 BLU, 30 RNG, 1 NIN <- I miss you Buster!