# HP Repair Cost
### **Repair Cost Calculation for NFT Shoes**
In CryptoHunter World, the repair cost for NFT shoes is determined by the durability of the shoes, represented by the **Resilience status**. This system encourages users to invest in and maintain higher Resilience values for cost efficiency. The repair cost formula is designed to ensure balance and fairness while providing players with strategic choices.
**Repair Cost Formula**\
The repair cost is calculated using the following formula:
* **Base Repair Cost**: A fixed value representing the base cost of repairing shoes per unit of durability.
* **Durability Lost**: The amount of durability reduced during gameplay.
* **Resilience**: The NFT shoe’s resilience stat, which reduces repair costs.
* **Cr **: A fixed coefficient to balance the effect of resilience on repair costs.
* **Rarity Multiplier**: A rarity-specific multiplier that adjusts the repair cost based on the rarity of the NFT shoe.
| **Rarity** | **Multiplier** |
| ---------- | -------------- |
| Normal | x1.0 |
| Rare | x1.25 |
| Unique | x1.5 |
| Legend | x1.75 |
| Mythic | x2.0 |
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