[Home](./index.md) > [bitburner](./bitburner.md) > [Singularity](./bitburner.singularity.md) > [getDarkwebProgramCost](./bitburner.singularity.getdarkwebprogramcost.md) ## Singularity.getDarkwebProgramCost() method Check the price of an exploit on the dark web Signature: ```typescript getDarkwebProgramCost(programName: string): number; ``` ## Parameters | Parameter | Type | Description | | --- | --- | --- | | programName | string | Name of program to check the price of | Returns: number Price of the specified darkweb program (if not yet purchased), 0 if it has already been purchased, or -1 if Tor has not been purchased. Throws an error if the specified program/exploit does not exist ## Remarks RAM cost: 0.5 GB \* 16/4/1 This function allows you to check the price of a darkweb exploit/program. You MUST have a TOR router in order to use this function. The price returned by this function is the same price you would see with buy -l from the terminal. Returns the cost of the program if it has not been purchased yet, 0 if it has already been purchased, or -1 if Tor has not been purchased (and thus the program/exploit is not available for purchase). If the program does not exist, an error is thrown. ## Example 1 ```ts // NS1 getDarkwebProgramCost("brutessh.exe"); ``` ## Example 2 ```ts // NS2 ns.getDarkwebProgramCost("brutessh.exe"); ```