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[Home ](./index.md ) > [bitburner ](./bitburner.md ) > [TIX ](./bitburner.tix.md ) > [getPurchaseCost ](./bitburner.tix.getpurchasecost.md )
## TIX.getPurchaseCost() method
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Calculates cost of buying stocks.
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< b > Signature:< / b >
```typescript
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getPurchaseCost(sym: string, shares: number, posType: string): number;
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```
## Parameters
| Parameter | Type | Description |
| --- | --- | --- |
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| sym | string | Stock symbol. |
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| shares | number | Number of shares to purchase. |
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| posType | string | Specifies whether the order is a “Long” or “Short” position. |
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< b > Returns:< / b >
number
Cost to buy a given number of shares of a stock.
## Remarks
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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.
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