Generally speaking, the local mobs drop more in Kunark zones...so you'll have an advantage there, though later on the mobs have a lot more HP compared to their old world cousins.
Totally doable to level up solely in Kunark and make money, however...if its pure platinum you want (over XP rates), keep in mind a few camps.
Nybright sisters 12-16ish (Lesser Faydark)
Named sisters on sister isle 25-32ish(Ocean of Tears) - might need someone or a low level alt parked there to sell for you.
Highkeep guards 34-45
Spectres (Oasis/Feerott) 37-50 (easier at 39)
Ice Giants (Everfrost) 46-??
Hope that helps you get started. I'd definitely do Kurn's Tower to 16, you'll be stocked with bone chips well into the 50s if you're careful with your pets
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