They don't really need to stack to be effective turn-ins. I mean, at that level you've got a bag in every inventory slot, no clickies, no resist gear, no cap/hammer/nets, etc. etc. 1/2 bag for supplies, 75 bag slots for belts!
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Winga - 59 Barbarian Shaman <BDA>
Hairyporter - 29 Halfling Druid
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