The Z-Token Item Shop is a special shop that can only be accessed by speaking with Valencia. Like the Z-Token Weapon Shop, all items must be purchased with Z-Tokens. It differs from the Z-Token weapon shop in that it only sells Armors, Shields, Spells, Pets, and Miscellaneous Items.
Like any shop, you are able to sell your unwanted items here. However, do not expect to get Z-Tokens for an item you bought with gold.