$(document).ready(function () {
var $price = $('.avr-table .price').text();
var $addend = 13000;
var $sum = parseInt($price) + $addend;
$('.avr-table .price').text($sum);
});
var addend = 13000;
$('.avr-table .price').each(function () {
var $this = $(this);
var price = $this.text();
var sum = parseInt(price) + addend;
$this.text(sum);
});