JSFiddle - React, Tailwind, and code Playground

HTML

<nav id="gift-subs-options">
    <ul>
        <li class="selected">
            <label>
                <input type="radio" name="subscription-period" value="3mths" checked />
                <span class="period">3 months</span>                        
            </label>
        </li>
        <li>
            <label>
                <input type="radio" name="subscription-period" value="6mths" />
                <span class="period">6 months</span>
            </label>
        </li>
        <li>
            <label>
                <input type="radio" name="subscription-period" value="12mths" />
                <span class="period">12 months</span>
            </label>
        </li>
    </ul>
</nav>

<div class="prices" data-period="3mths">A 1</div>
<div class="prices" data-period="6mths">B 1</div>
<div class="prices" data-period="12mths">C 1</div>

<div class="prices" data-period="3mths">A 2</div>
<div class="prices" data-period="6mths">B 2</div>
<div class="prices" data-period="12mths">C 2</div>

<div class="prices" data-period="3mths">A 2</div>
<div class="prices" data-period="6mths">B 2</div>
<div class="prices" data-period="12mths">C 3</div>

JavaScript

$(document).ready(function() {
    $(".prices").hide();
    
    $("input[name$='subscription-period']").click(function() {
        var test = $(this).val();
        $(".prices[data-period]='" + test + "'").show();
    });
});