JSFiddle - React, Tailwind, and code Playground

HTML

<select name="price">
  <option value="100">маленький</option>
  <option value="500">большой</option>
  <option value="100500">гигантский</option>
</select>
<div id="priceDisplay">100</div>

JavaScript

$('select[name="price"]').on('change', function(){
  $('#priceDisplay').html(this.value)
})