> For the complete documentation index, see [llms.txt](https://docs.artinals.com/artinals-protocol/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.artinals.com/artinals-protocol/functions-and-entry-points/purchasing-nfts-from-a-sale.md).

# Purchasing NFTs from a Sale

**`purchase_nfts<CURRENCY>(...)`**\
**Purpose**: Allows a buyer to purchase one or multiple NFTs directly from the sale by paying the required currency.

**Key Parameters**:

* `sale`: A mutable reference to the `NFTSale`.
* `payment`: A `Coin<CURRENCY>` containing enough value to cover the purchase.
* `asset_ids`: A vector of the specific NFTs (by asset\_id) the buyer wishes to purchase.
* `collection_cap`: For checking deny list and other constraints.
* `ctx`: The transaction context.

**Process**:

1. Verify `sale.is_active` is true.
2. Check that the buyer is not on the deny list.
3. Validate the payment covers `price_per_nft * number_of_NFTs`.
4. Deduct the NFTs from the sale, transfer them to the buyer, and deposit the payment into the sale’s currency balance.
5. Emit an `NFTPurchased` event and update user balances.

**Use Cases**:

* A collector buys 3 NFTs from a sale, paying the set price in the required currency.
* Automated scripts purchase NFTs in batches if they match investment criteria.