Why is fancybox 3 ajax not working on reclick?

Question

JavaScript

Hello. There is a regular html link with data parameters changing in it:

<a href="#" class="askPriceBtn" data-product="Yeti 51003" data-id="10062">Узнать стоимость</a>

The parameters change correctly, there are no problems with this. When you click on this button, fancybox ajax should fire, which passes these parameters to the php script:

$('.askPriceBtn').on('click', function(event) {
    event.preventDefault();

    $.fancybox.open({
      src: '/includes/askPriceForm.php?id=' + $(this).data('id') + "&iblock=" + $(this).data('iblock'),
      type: 'ajax',
      opts : {
        afterShow : function( instance, current ) {
          $('[type="checkbox"]').iCheck({checkboxClass: 'icheckbox_square-red'});
        }
      }
    })
  });

Works correctly the first time. But then those parameters that worked for the first time are transferred to the script. I tried this option with parameter passing:

$('.askPriceBtn').on('click', function(event) {
    event.preventDefault();

    $.fancybox.open({
      src: '/includes/askPriceForm.php',
      type: 'ajax',
      ajax: {
        type: 'GET',
        data: {
          ...
        }
      }
      opts : {
        afterShow : function( instance, current ) {
          $('[type="checkbox"]').iCheck({checkboxClass: 'icheckbox_square-red'});
        }
      }
    })
  });

Also, instead of .on('click', function(event){}) I just tried .click(), the same.
Why doesn't it work and how to do it right?