JSFiddle - React, Tailwind, and code Playground

HTML

<div class='jt-header'>a header 1</div>
<div class='jt-detail'>a detail 1
    <div class='jt-item-price'>12.34</div>
</div>
<div class='jt-header'>another header 2
    <div class='jt-item-price'>34.45</div>
</div>
<div class='jt-detail'>another detail 2</div>

JavaScript

$('.jt-header').append(function(){
    return $(this).next('.jt-detail').children('.jt-item-price');
});