How to override a WooCommerce product’s price

Taking full control of the price rendered by WooCommerce can be a tricky task, especially considering variation products and all the different locations it can be displayed. I'll show you the combination of hooks that worked for me.

There’s a lot of posts out there describing how to force your own price to display when WooCommerce renders a product. Many of them are outdated or don’t handle all needed situations. The technique I’m sharing below is based on:

WooCommerce Version 6.9.4

These filters and actions will affect simple and variable products on the category page, product detail page, cart page, and mini-cart view. My hooks use a fixed price, but you can insert any custom logic needed into your own implementation.

I setup a visual example, first showing a typical simple and variable product on an archive/category page:

Archive page before hooks applied
Overridden prices with the filter and action hooks enabled.
The detail of a variable product before hooks are applied.
The variable product detail after applying override hooks.
The WooCommerce cart view after applying override hooks.

Implementing the price override

To achieve this level of control over your product pricing implement these filters and actions in your functions.php file or custom class:

function maybe_alter_product_price_excluding_tax( $price, $qty, $product ){

    $price = 999.99;

    return $price;
}

function maybe_alter_product_price( $price, $product ){

    $price = 999.99;

    return $price;
}

function maybe_alter_cart_item_data( $cart_item_data, $product_id, $variation_id ){

    $cart_item_data['altered_price'] = 999.99;

    return $cart_item_data;
}

function maybe_alter_calculate_totals( $cart_obj ) {

    if ( is_admin() && ! defined( 'DOING_AJAX' ) )
        return;

    foreach ( $cart_obj->get_cart() as $key=>$value ) {

        if ( isset( $value['altered_price'] ) ) {
            $value['data']->set_price( $value['altered_price'] );
        }
    }
}

add_filter( 'woocommerce_product_get_price', 'maybe_alter_product_price', 99, 2 );
add_filter( 'woocommerce_get_price_excluding_tax', 'maybe_alter_product_price_excluding_tax', 99, 3 );
add_filter( 'woocommerce_variation_prices_price', 'maybe_alter_product_price', 99, 2 );
add_filter( 'woocommerce_add_cart_item_data', 'maybe_alter_cart_item_data', 99, 3 );
add_action( 'woocommerce_before_calculate_totals', 'maybe_alter_calculate_totals', 99, 1 );

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