[Home](./index.md) > [bitburner](./bitburner.md) > [HackNet](./bitburner.hacknet.md) > [getLevelUpgradeCost](./bitburner.hacknet.getlevelupgradecost.md) ## HackNet.getLevelUpgradeCost() method Returns the cost of upgrading the specified Hacknet Node by n levels. If an invalid value for n is provided, then this function returns 0. If the specified Hacknet Node is already at max level, then Infinity is returned. Signature: ```typescript getLevelUpgradeCost(index: number, n: number): number; ``` ## Parameters | Parameter | Type | Description | | --- | --- | --- | | index | number | Index/Identifier of Hacknet Node. | | n | number | Number of levels to upgrade. Must be positive. Rounded to nearest integer. | Returns: number Cost of upgrading the specified Hacknet Node. ## Remarks 0 GB