> ## Documentation Index
> Fetch the complete documentation index at: https://thrackle.mintlify.site/llms.txt
> Use this file to discover all available pages before exploring further.

# IProtocolERC721Pricing

[Git Source](https://github.com/forte-service-company-ltd/forte-rules-engine/blob/6b9ac124d2cb0fe47a8b5c261a1dd458067f45ea/src/common/IProtocolERC721Pricing.sol)

**Inherits:**
[NFTPricingErrors](/v1/reference/common/IErrors.sol/interface.NFTPricingErrors)

**Author:**
@ShaneDuncan602, @oscarsernarosero, @TJ-Everett

This contract is a simple pricing mechanism only. Its main purpose is to store prices.

*This interface is used for simplicity in implementation of actual pricing module.*

## Functions

### getNFTPrice

*Gets the price for an NFT. It will return the NFT's specific price, or the
price of the collection if no specific price has been given.*

```solidity
function getNFTPrice(address nftContract, uint256 id) external view returns (uint256 price);
```

**Parameters**

| Name          | Type      | Description                        |
| ------------- | --------- | ---------------------------------- |
| `nftContract` | `address` | is the address of the NFT contract |
| `id`          | `uint256` | of the NFT                         |

**Returns**

| Name    | Type      | Description                                           |
| ------- | --------- | ----------------------------------------------------- |
| `price` | `uint256` | of the Token in weis of dollars. 10^18 => \$ 1.00 USD |

### getNFTCollectionPrice

*Gets the default price for an NFT collection.*

```solidity
function getNFTCollectionPrice(address nftContract) external view returns (uint256 price);
```

**Parameters**

| Name          | Type      | Description                        |
| ------------- | --------- | ---------------------------------- |
| `nftContract` | `address` | is the address of the NFT contract |

**Returns**

| Name    | Type      | Description                                           |
| ------- | --------- | ----------------------------------------------------- |
| `price` | `uint256` | of the Token in weis of dollars. 10^18 => \$ 1.00 USD |