Freemius Buy Button Code for a Multi-Plans Table

multi-plan-buy-button.html

<script src="https://checkout.freemius.com/checkout.min.js"></script>

<select id="starter-licenses">
   <option value="1" selected="selected">Single Site License</option>
   <option value="5">5-Site License</option>
   <option value="25">25-Site License</option>
   <option value="unlimited">Unlimited Sites License</option>
</select>
<button id="starter-purchase">Buy Starter</button>

<select id="pro-licenses">
   <option value="1" selected="selected">Single Site License</option>
   <option value="5">5-Site License</option>
   <option value="25">25-Site License</option>
   <option value="unlimited">Unlimited Sites License</option>
</select>
<button id="pro-purchase">Buy Professional</button>

<select id="bus-licenses">
   <option value="1" selected="selected">Single Site License</option>
   <option value="5">5-Site License</option>
   <option value="25">25-Site License</option>
   <option value="unlimited">Unlimited Sites License</option>
</select>
<button id="bus-purchase">Buy Professional</button>

<script type="text/javascript">
(function(){
    var freemiusHandler = FS.Checkout.configure({
        name : '<pluginTitle>',
        plugin_id: '<pluginID>',
        public_key: '<publicKey>'
    });

    var plans = {
        starter: '<starterPlanID>', 
        pro:     '<proPlanID>',
        bus:     '<busPlanID>'
    };

    var addBuyHandler = function (plan, planID){
        $('#' + plan + '-purchase').on('click', function (e) {
            freemiusHandler.open({
                plan_id : planID,
                licenses: $('#' + plan + '-licenses').val(),
                // You can consume the response for after purchase logic.
                success : function (response) {
                    // alert(response.user.email);
                }
            });

            e.preventDefault();
        });
    };

    for (var plan in plans) {
        if (!plans.hasOwnProperty(plan))
            continue;

        addBuyHandler(plan, plans[plan]);
    }
})();
</script>