I won't be spending the money, but I really don't care any more. It's in pretty much every major MMO these days. EQ2 lets you buy non-combat pets, self-illusions, and decorations for your house. LOTRO is introducing this Adventurer's Pack which adds more character slots, a shared bank space, and an item which increases your run speed. Guild Wars lets you buy additional bank storage panes (20 panes per slot) or unlock pets, bonus missions, skills, or items (which isn't really game-changing the way that Guild Wars works). Whatever you feel about RMT, it's the way things are going.