Should I buy resources with gold at the Market?

Use it sparingly. Trading gold for base resources at the Market is handy to unblock an urgent build or training, but it's a poor habit as a rule.

Why: gold is permanent, while the resources you buy reset at the next Reign. So you're converting durable capital into disposable consumables.

The best uses of gold at the Market remain permanent purchases:

• Targeted Relics (to raise a key dragon's Star Rank)
• Cores (for Habits)
• Chest keys

Simple rule: buy resources with gold only if it unlocks an important milestone right now (e.g. reaching a Stronghold tier the campaign requires). Otherwise, keep your gold for the permanent.