Битрикс. Не выводятся значения свойств привязанных элементов?

<?php if(!defined("B_PROLOG_INCLUDED") || B_PROLOG_INCLUDED!==true) die();

$arSelect = Array("ID", "NEW_PRICE"); 
$arFilter = Array("IBLOCK_ID"=>6, "ACTIVE"=>"Y","ID"=>$_GET["prices"]);

$res = CIBlockElement::GetList(array("SORT" => "ASC"), $arFilter, false, Array("nPageSize"=>PHP_INT_MAX), $arSelect);

$prices = array();
while($ob = $res->GetNextElement())
{
  $arFields = $ob->GetFields();
  $prices[] = $arFields;
}

$arResult["PRICE_Q"] = $prices;

?>

<?if($arResult["PROPERTIES"]["PRICES"]["VALUE"] > 0){?>
	<h4 class="text-center">Цены</h4>
	<section class="bottommargin_30 row item-content ">					
		<div class="prom_beer_wrapper col-sm-12">
			<ul class="list1 no-bullets">
				<?foreach($arResult["PROPERTIES"]["PRICES"]["VALUE"] as $prices):?> 
					<?$res = CIBlockElement::GetByID($prices);?> 
					<?if($ar_res = $res->GetNext())?> 					
					<li class="content-justify"><?=$ar_res["NAME"];?>
					<?=$arResult["PRICE_Q"];?></li>
					<?endforeach;?>
			</ul>						
		</div>					
	</section>
<?}?>