I know a guy with all but 1 slot in his inventory selling crap on only shelves. So... I'd say unlimited.
KaozReaper - for-hire Alchemist
Whitept - 14x Fire Killer
Forgotten - 11x Fire Seer (8x RB Xaolan)
TheScholar - 14x Perfect Water Priest (13x RB Niss)
Leo - UnitedLeos
FREE IGG Points! ^_^
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