Gald and materials are essential for shop development and purchasing new equipment. Here's how to farm them efficiently:

Kitty Dispatch: Regularly send out your cats to gather materials passively. Upgrade their luck for better returns.
Leia's Elongating Staff: Use Leia's unique skill to steal items from enemies. This is a great way to get rare materials.
Monster Hunts: Completing Monster Hunts often rewards large sums of Gald and unique materials.
Shop Development: Prioritize developing the 'Item' shop to unlock the 'Gald Boost' skill, which increases Gald earned from battles.
Selling Unused Equipment: Don't hoard old weapons and armor. Sell them for extra Gald, especially after upgrading your shops.
Area Exploration: Thoroughly explore every map for treasure chests and sparkling spots, which often contain valuable items or materials.

Combine these methods for a steady income of Gald and materials throughout your playthrough.

Efficient Gald & Material Farming — Tales of Xillia Guide