Ok, the choices I found that somewhat meet these requirements were:
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Nether Vortex, stack 200, buy 70, sell 2g, G'eras Shattrath 50.8 42.4, Crafting Reagent .
Primal Nether, stack 200, buy 40, sell 1g60, G'eras Shattrath 50.8 42.4, Crafting Reagent.
Hardened Adamantite Tube, stack 200...