How to sort by price in the filter?

Question

PHP

How to sort by price in the Bitrix filter? The getlist method is used: CIBlockElement::GetList(Array("SORT"=>"ASC", "PROPERTY_PRIORITY"=>"ASC"), $arFilter, false, Array("nPageSize"=>15), $arSelect);
Products are displayed in filter.php
How can I make it filter by price (ascending, descending)?

Answer 1

Like this
If you're too lazy ,
then read this

Answer 2

CIBlockElement - does not know the price. this is the iblock class, prices in the trade catalog