Use the pmprowoo_get_membership_price filter to set prices for variable products with Paid Memberships Pro and WooCommerce

my_pmprowoo_get_membership_price.php

<?php
/**
 * Use the pmprowoo_get_membership_price filter to set prices for variable products.
 * Update the $membership_prices array.
 * Each item in that array should have a key equal to the membership level id,
 * and a value equal to an array of the form array( {variable_product_id} => {member_price} )
 * Add this code to your PMPro Customizations Plugin - https://www.paidmembershipspro.com/create-a-plugin-for-pmpro-customizations/
 */
function my_pmprowoo_get_membership_price( $discount_price, $level_id, $original_price, $product ) {
    // Setup your arrays of product ids to membership prices.
    $membership_prices = array(
        '1' => array(                //-level 1 prices-
            '100' => '10.00',        //--product #100 price for level 1
            '101' => '15.00',        //--product #101 price for level 1
            '102' => '20.00',        //--product #101 price for level 1
        ),
        '2' => array(                //-level 2 prices-
            '100' => '5.00',        //--product #100 price for level 2
            '101' => '10.00',        //--product #101 price for level 2
            '102' => '15.00',        //--product #101 price for level 2
        ),
    );

    // Find the level_id, product combo to get the price.
    if( isset( $membership_prices[$level_id] ) &&
        isset( $membership_prices[$level_id][$product->get_id()] ) ) {
        $discount_price = $membership_prices[$level_id][$product->get_id()];
    }

    return $discount_price;
}
add_filter( 'pmprowoo_get_membership_price', 'my_pmprowoo_get_membership_price', 10, 4 );

This recipe is included in the blog post on "Set WooCommerce Variable Product Prices Per Membership Level" at Paid Memberships Pro here: https://www.paidmembershipspro.com/set-woocommerce-variable-product-prices-per-membership-level/