Prices are based solely on the skin and req of the weapons and mods prices are not taken into account. And also the prices here are for gold items. Purple items have to be price checked on a case by case basis. Feel free to add onto the list any weapons you think are popular/rare and i will try my best to update it.
--------------------Sword--------------------
Adamantine Falchion
(req 9) ---> 30k - 40k
(req10) ---> 20k - 30k
Aerowind Blade
(req 9) ---> 20k - 30k
Bramble Blade
(req9) ---> 30k - 40k
(req10) ---> 20k - 30k
(req11) ---> <20k
Briar Blade
(req9) ---> 30k - 40k
(req10) ---> 20k - 30k
(req11) ---> <20k
Brute Sword
(req9) ---> 30k - 40k
(req10) ---> 10k - 20k
Colossal Scimitar
(req9) ---> 100k - 200k
(req10) ---> 60k - 80k
(req11) ---> 30k - 50k
Dead Sword
(req 9) ---> 30k - 40k
(req 10) ---> 20k - 30k
(req 11) ---> 10k - 20k
Desolation Sword
(req9) ---> 20k - 30k
(req10) ---> 10k - 20k
Elemental Sword
(req 9) ---> 600k - 800k
(req 10) ---> 500k - 600k
(req 11) ---> 400k - 500k
(req 12) ---> 300k - 400k
(req 13) ---> 200k - 300k
Fanged Sword
(req9) ---> 30k - 40k
(req10) ---> 20k - 30k
Fellblade
(req9) ---> 60k - 80k
(req10) ---> 40k - 60k
(req11) ---> 20k - 40k
(req12) ---> <20k
Fiery Gladius
(req 9) ---> 80k - 100k
(req 10) ---> 60k - 80k
(req 11) ---> 50k - 60k
(req 12) ---> 40k - 50k
(req 13) ---> 20k - 30k
Gladius (Elona Skin)
(req9) ---> 30k - 40k
(req10) ---> 20k - 30k
Igneous Blade
(req9) ---> 20k - 30k
(req10) ---> 10k - 20k
Golden Machete
(req9) ---> 20k - 30k
(req10) ---> 10k - 15k
Long Sword
(req9) ---> 30k - 50k
(req10) ---> 20k - 30k
Ornate Scimitar
(req9) ---> 30k - 50k
(req10) ---> 20k - 30k
(req11) ---> 10k - 20k
Ripper Blade
(req9) ---> 20k - 30k
(req10) ---> 10k - 20k
Tattooed Scimitar
(req9) ---> 40k - 60k
(req10) ---> 20k - 40k
Vabbian Scimitar
(req9) ---> 20k - 30k
(req10) ---> 10k - 20k
--------------------Axe--------------------
Ancient Axe
(req9) ---> 20k - 30k
(req10) ---> 10k - 20k
(req11) ---> <10k
Crude Axe
(req9) ---> 50k - 60k
(req10) ---> 30k - 40k
(req11) ---> 20k - 30k
Dual Winged Axe
(req9) ---> 30k - 40k
(req10) ---> 20k - 30k
Icy Blade Axe
(req 9) ---> 60k - 80k
(req 10) ---> 40k - 50k
(req 11) ---> 30k - 40k
(req 12) ---> 20k - 40k
(req 13) ---> 10k - 20k
Fiery Blade Axe
(req 9) ---> 60k - 80k
(req 10) ---> 40k - 50k
(req 11) ---> 30k - 40k
(req 12) ---> 20k - 40k
(req 13) ---> 10k - 20k
Heket Axe
(req9) ---> 50k - 60k
(req10) ---> 30k - 40k
(req11) ---> 20k - 30k
Sephis Axe
(req9) ---> 80k - 100k
(req10) ---> 60k - 80k
(req11) ---> 40k - 60k
Shadow Axe
(req9) ---> 20k - 30k
(req10) --->10k - 20k
(req11) ---> <10k
Ungula Axe
(req9) ---> 20k - 30k
(req10_ ---> 10k - 20k
(req11) ---> <10k
--------------------Hammer--------------------
Desolation Maul
(req9) ---> 30k - 40k
(req10) ---> 10k - 20k
Igneous Maul
(req9) ---> 10k - 20k
Ruby Maul
(req9) ---> 20k - 30k
(req10) ---> 10k - 20k
--------------------Spear--------------------
Brass Spear
(req9) ---> 20k - 30k
Clouded Spear
(req 9) ---> 20k - 30k
(req10) ---> 10k - 20k
Nightmare Spear
(req 9) ---> 20k - 30k
(req 10) ---> 10k - 20k
Skull Spear
(req9) ---> 20k - 30k
(req10) ---> 10k - 20k
Spiral Spear
(req9) ---> 20k - 30k
Suntouched Spear
(req9) ---> 20k - 30k
Tribal Spear
(req9) ---> 20k - 30k
Windblade Spear
(req9) ---> 20k - 30k
--------------------Scythe--------------------
Ancient Scythe
(req 9) ---> 20k - 30k
(req 10) ---> 10k - 20k
Crenellated Scythe
(req9) ---> 20k - 30k
(req10) ---> 10k - 20k
Grim Scythe
(req9) ---> 20k - 30k
(req10) ---> 10k - 20k
Nightmare Scythe
(req 9) ---> 20k - 30k
(req 10) ---> 10k - 20k
Razorclaw Scythe
(req9) ---> 20k - 30k
(req10) ---> 10k - 20k
Shadow Scythe
(req9) ---> 20k - 30k
(req10) ---> 10k - 20k
--------------------Bow--------------------
Azure Shortbow
(req9) ---> 20k+
Azure Recurve Bow
(req9) ---> 30k - 40k
(req10) ---> 10k - 30k
Eternal Bow
(req9) ---> 70k - 100k
(req10) ---> 40k - 50k
(req11) ---> 30k - 40k
Skull Recurve Bow
(req9) ---> 20k - 30k
Stormbow
(req9) ---> 70k - 100k
(req10) ---> 50k - 70k
(req11) ---> 30k - 40k
(req12) ---> <20k
--------------------Shield--------------------
Warrior
Adamantine Shield
Tactics
(req 9) ---> 40k - 60k
(req 10) ---> 20k - 30k
Ancient Shield
Tactics
(req 9) ---> 40k - 60k
(req 10) ---> 20k - 30k
Crude Shield
Tactics
(req9) ---> 50k - 80k
(req10) ---> 30k - 40k
(req11) ---> 20k - 30k
Diamond Aegis
Tactics
(req9) ---> 40k - 60k
(req10) ---> 20k - 30k
Eternal Shield
Strength only
(req9) ---> 100k - 200k
(req10) ---> 80k - 100k
(req11) ---> 40k - 60k
Gloom Shield
Tactics
(req9) ---> 80k - 100k
(req10) ---> 40k - 60k
(req11) ---> 20k - 30k
(req12) ---> <20k
Strength
(req9) ---> 100k - 150k
(req10) ---> 60k - 80k
(req11) ---> 30k - 50k
(req12) ---> <30k
Iridescent Aegis
Tactics
(req9) ---> 50k - 80k
(req10) ---> 30k - 40k
Istani Shield
Strength
(req9) ---> 80k - 100k
(req10) ---> 40k - 60k
Kournan Defender
Strength
(req9) ---> 30k - 40k
(req10) ---> 20k - 30k
Magmas Shield
Strength Only
(req9) ---> 600k - 800k
(req10) ---> 400k - 600k
(req11) ---> 200k -300k
(req12) ---> 100k - 200k
Sea Purse Shield
Tactics
(req9) ---> 30k - 50k
(req10) ---> 20k - 30k
Sharktooth Shield
Tactics
(req9) ---> 50k - 80k
Strength
(req9) ---> 50k - 80k
Shield Of The Lion
Strength
(req9) ---> 20k - 40k
(req10) ---> 10k - 20k
Sun and Moon Shield
Tactics
(req 9) ---> 60k - 80k
(req 10) ---> 30k - 40k
Strength
(req 9) ---> 80k - 100k
(req 10) ---> 40k - 60k
Tribal Shield
Tactics
(req9) ---> 80k - 100k
Paragon
Ancient Shield
Motivation
(req 9) ---> 20k - 30k
(req 10) ---> 5k - 10k
Command
(req 9) ---> 20k - 30k
(req 10) ---> 5k - 10k
Aureate Aegis
Motivation
(req9) ---> 20k - 30k
(req10) ---> 5k - 10k
Command
(req9) ---> 20k - 30k
(req10) ---> 5k - 10k
Diamond Aegis
Command
(req9) ---> 20k - 30k
Motivation
(req9) ---> 20k - 30k
Eagle Defender
Motivaton
(req9) ---> 20k - 30k
Command
(req9) ---> 20k - 30k
Iridescent Aegis
Command
(req9) ---> 30k - 40k
Motivation
(req9) ---> 30k - 40k
Reinforced Defender
Command
(req9) ---> 20k - 30k
Motivation
(req9) ---> 20k - 30k
Scarabshell Aegis
Motivation
(req 9) ---> 20k - 30k
(req 10) ---> 10k - 20k
Command
(req 9) ---> 20k - 30k
(req 10) ---> 10k - 20k
Vabbian Bastion
Motivation
(req9) ---> 20k - 30k
Command
(req9) ---> 20k - 30k
Vabbian Defender
Motivation
(req9) ---> 20k - 30k
Command
(req9) ---> 20k - 30k
--------------------Caster's Weapons--------------------
Air Staff (Metallic Head) (Air MAgic)
(req9) ---> 60k - 80k
Aureate Lamp (Divine Favor)
(req9) ---> 20k - 40k
Blessed Chalice (Healing Prayers)
(req9) ---> 30k - 50k
Divine Symbol (Pimp Cup) (Divine Favor)
(req9) ---> 30k - 50k
Dragon Breath Wand (Fire Magic)
(req9) ---> 60k - 80k
Earth Staff (Orrian Skin) (Earth Magic)
(req9) ---> 100k+
Earth Staff (Floating Stone Skin) (Earth Magic)
(req9) ---> 40k - 50k
Eternal Flame Wand (Healing Prayers)
(req9) ---> 30k - 50k
Fire Staff (Cathan Skin) (Fire Magic)
(req9) ---> 80k - 100k
Flame Artifact (Eye Skin) (Fire Magic)
(req9) ---> 40k - 50k
Ghostly Staff <req9>
(General) ---> 80k - 250k
(Fire) ---> 150k - 250k
(Death) ---> 150k - 200k
(Heal) ---> 120k - 160k
(Blood) ---> 100k - 150k
Guardian Branch (Earth Magic)
(req9) ---> 30k - 40k
Holy Vial (Protection Prayers)
(req9) ---> 20k - 30k
Jeweled Staff (Twin Dragon Skin) (Illusion Magic)
(req9) ---> 20k - 40k
Portal Staff (Energy Storage)
(req9) ---> 20k - 40k
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Many thanks to everyone who have contributed to the guide especially StueyG and wilderness who helped me a great deal in starting up this guide, and also scyfer for providing a head start on the casters list.
Note: The above price guide is based on the latest buy/sell information here on guru as well as from in game, from myself as well as the nice people who post their findings here. And not at anytime, myself or any of the contributors be responsible for any loss, whatsoever, anyone suffered from following the guide.