JSFiddle - React, Tailwind, and code Playground

HTML

<label>100<input type="radio" name="price" value="100" checked></label>
<label>200<input type="radio" name="price" value="200"></label>
<label>300<input type="radio" name="price" value="300"></label>

<input type="text" value="100">

CSS

label{
  margin: 0 0 10px;
  display: block;
}

JavaScript

$(':radio').on('change', function(){
		$(':text').val(this.value);
});