Here you will find an entire list of EP values for guild bank trade-ins.
~EP VALUES ONLY ~
Enchanting Materials:
-Draenic Dust = 0.1
-Luminous Shard = 0.2
Engineering/Mining/Jewelcrafting Materials:
-True Iron ore = 0.1
-Blackrock Ore = 0.1
Alchemy/Inscription Materials:
-Herbs (any) = 0.1
-Alchemical Catalyst = 0.5
-Ink/Paint = 0.5
-Drum Kits (Mini Heroism) = 0.5
Leather working/Tailoring Materials:
-Sumptuous Fur = 0.25
-Raw Beast Hide = 0.25
Cooking Materials:
-Any Draenor Meat = 0.25
-Any Draenor Fish = 0.25
Raiding Materials:
-Large Flasks = 1.0
-Lesser Flasks = 0.5
-Potions = 0.5
-Feasts (100 Stat) = 0.5
-Stat Runes = 1.0
-Superior Gems = 1.0
-Lesser Gems = 0.1
OTHER:
-Sorcerous Elements = 0.5
-Savage Blood = 5.0
-Gold = 1.0 (1 gold = 1 EP)
THIS LIST IS SUBJECT TO CHANGE. ANY AND ALL CHANGES WILL BE ANNOUNCED BEFOREHAND BASED ON THE GUILDS NEEDS. THESE CHANGES CAN BE FOUND HERE OR BY CONTACTING CYNPHEL.