Here is a list of the items in the marketplace. Under each item there cost and the amount of gold given back if you sell them are listed. Attack: Elixir of Rage cost: 5,000 gold given back when sold:3,750 Invisibility Potion cost: 10,000 gold given back when sold: 7,500 Scroll of Death cost: 25,000 gold given back when sold: 18,750 Seal of Lightning cost: 50,000 gold given back when sold: 37,500 Magical Dagger cost: 100,000 gold given back when sold: 75,000 Mystical Sword cost: 250,000 gold given back when sold:187,500 Electric Sphere cost: 500,000 gold given back when sold: 375,000 Rain of Fire cost: 1,000,000 gold given back when sold: 750,000 Book of the Dead cost: 2,500,000 gold given back when sold: 1,875,000 Holy Wrath cost: 7,500,000 gold given back when sold: 5,625,000 Locust Swarm cost: 8,500,000 gold given back when sold: 6,375,000 Summon Undead cost: 12,000,000 gold given back when sold: 9,000,000 Blizzard cost: 15,000,000 gold given back when sold: 11,250,000 Mystical Hammer cost: 22,500,000 gold given back when sold: 16,875,000 Defense: Elixir of Vitality cost: 1,250 gold given back when sold: 937 Potion of Sight cost: 2,500 gold given back when sold: 1,875 Scroll of Healing cost: 6,250 gold given back when sold: 4,687 Seal of Deflection cost: 12,500 gold given back when sold: 9,375 Magical Shield cost: 25,000 gold given back when sold: 18,750 Healing Aura cost: 62,500 gold given back when sold: 46,875 Elven Shield cost: 125,000 gold given back when sold: 93,750 Magic Wall cost: 250,000 gold given back when sold: 187,500 Chalice of Life cost: 1,250,000 gold given back when sold: 937,500 Staff of Ages cost: 3,750,000 gold given back when sold: 2,812,500 Basilisk Venom cost: 4,000,000 gold given back when sold: 3,000,000 Seal of Divinity cost: 6,000,000 gold given back when sold: 4,500,000 Black Death cost: 6,750,000 gold given back when sold: 5,062,500 Spy Attack: Sleeping Potion cost: 5,000 gold given back when sold: 3,750 Scroll of Blindness cost: 20,000 gold given back when sold: 15,000 Bribery Gem cost: 60,000 gold given back when sold: 45,000 Bribery Diamond cost: 150,000 gold given back when sold: 112,500 Ring of Shadows cost: 400,000 gold given back when sold: 300,000 Cloak of Invisibility cost: 1,000,000 gold given back when sold: 750,000 Cloak of Shadows cost: 2,500,000 gold given back when sold: 1,875,000 Book of Shadows cost: 7,500,000 gold given back when sold: 5,625,000 Mind Scream cost: 10,000,000 gold given back when sold: 7,500,000 Summon Darkness cost: 12,000,000 gold given back when sold: 9,000,000 Spell of Amnesia cost: 18,000,000 gold given back when sold: 13,500,000 Amulet of Truth cost: 25,000,000 gold given back when sold: 18,750,000 [/color=Blue]Spy Defense:[/color] Mist of Confusion cost: 1,250 gold given back when sold: 937 Scroll of the Mage's Eye cost: 5,000 gold given back when sold: 3,750 Warning Amulet cost: 15,000 gold given back when sold: 11,250 Runes of Detection cost: 37,500 gold given back when sold: 28,125 Ring of Vision cost: 100,000 gold given back when sold: 75,000 Canary cost: 250,000 gold given back when sold: 187,500 Orb of Illumination cost: 1,250,000 gold given back when sold: 937,500 Angels of Light cost: 3,750,000 gold given back when sold: 2,812,500 Ice Paralysis cost: 5,000,000 gold given back when sold: 3,750,000 Staff of Clarity cost: 6,000,000 gold given back when sold: 4,500,000 All-Seeing Eye cost: 7,500,000 gold given back when sold: 5,625,000 Bronze bar cost: 30,000,000 gold given back when sold: 22,500,000 I hope this helped.
Good try and waste of time for you unfortunately. Already been done. Potions Guide by Jam in the strategy section.