enable a custom price range query on WC_Product_Query

handle_price_range_query_var.php

add_filter( 'woocommerce_product_data_store_cpt_get_products_query', 'handle_price_range_query_var', 10, 2 );
function handle_price_range_query_var( $query, $query_vars ) {
    if ( ! empty( $query_vars['price_range'] ) ) {
        $price_range = explode( '|', esc_attr($query_vars['price_range']) );

        if ( is_array($price_range) && count($price_range) == 2 ) {
            $query['meta_query']['relation'] = 'AND';

            $query['meta_query'][] = array(
                'key'     => '_price',
                'value'   => reset($price_range), // From price value
                'compare' => '>=',
                'type'    => 'NUMERIC'
            );

            $query['meta_query'][] = array(
                'key'     => '_price',
                'value'   => end($price_range), // To price value
                'compare' => '<=',
                'type'    => 'NUMERIC'
            );

            $query['orderby'] = 'meta_value_num'; // sort by price
            $query['order'] = 'ASC'; // In ascending order
        }
    }
    return $query;
}


// EXAMPLE USAGE

$products = wc_get_products( [
    'limit'       => 20,
    'status'      => 'publish',
    'price_range' => '10.25|50', // The first price is separated from the 2nd one with a pipe
] );

echo '<ul>';

foreach( $products as $product ) {
    echo '<li><a href="'.$product->get_permalink().'">'.$product->get_name().' '.$product->get_price_html().'</a></li>';
}
echo '</ul>';