[Home](./index.md) > [bitburner](./bitburner.md) > [TIX](./bitburner.tix.md) > [getPurchaseCost](./bitburner.tix.getpurchasecost.md) ## TIX.getPurchaseCost() method Calculates cost of buying stocks. Signature: ```typescript getPurchaseCost(sym: string, shares: number, posType: string): number; ``` ## Parameters | Parameter | Type | Description | | --- | --- | --- | | sym | string | Stock symbol. | | shares | number | Number of shares to purchase. | | posType | string | Specifies whether the order is a “Long” or “Short” position. | Returns: number Cost to buy a given number of shares of a stock. ## Remarks RAM cost: 2 GB Calculates and returns how much it would cost to buy a given number of shares of a stock. This takes into account spread, large transactions influencing the price of the stock and commission fees.