<div class="col search_price discounted responsive_secondrow">
<span style="color: #888888;"><strike>29,17 pуб.</strike></span><br>14,17 pуб. </div>
<br> и до </div>
$re = '/<div class="col search_price discounted responsive_secondrow">
<span style="color: #888888;"><strike>29,17 pуб\.<\/strike><\/span><br>(.*)<\/div>/m';
$str = '<div class="col search_price discounted responsive_secondrow">
<span style="color: #888888;"><strike>29,17 pуб.</strike></span><br>14,17 pуб. </div>';
preg_match_all($re, $str, $matches, PREG_SET_ORDER, 0);
// Print the entire match result
var_dump($matches);