How to get product variation price in woocommerce_checkout_create_order_line_item hook

Ok, i have found the solution:

In the object $item i found this:

$item->legacy_values['variation_id']

which gives me the ID. Also in $item->legacy_values[] array i have the both prices, which i take now:

function wpler_add_quantities_to_order_items($item, $cart_item_key, $values, $order) {
    setlocale(LC_MONETARY, 'de_DE');
    $price1 = doubleval($item->legacy_values['price1']);
    $price2 = doubleval($item->legacy_values['price2']);
    $r = $order->get_billing_postcode();

    $rabatt = !empty($r)&&is_numeric($r)&&$r>0 ? doubleval($r) : 0;
    $ep1 = calcPrices($price1, $price2, intval($values['quantity']), $rabatt);
    $ep2 = calcPrices($price1, $price2, intval($values['quantity10']), $rabatt);
    $ep3 = calcPrices($price1, $price2, intval($values['quantity20']), $rabatt);
    $item->add_meta_data("Preis für {$values['quantity']} Stück", money_format('%.2n', $ep1));
    $item->add_meta_data("Preis für {$values['quantity10']} Stück", money_format('%.2n', $ep2));
    $item->add_meta_data("Preis für {$values['quantity20']} Stück", money_format('%.2n', $ep3));
}
add_filter('woocommerce_checkout_create_order_line_item', 'wpler_add_quantities_to_order_items', 10, 4);