JQuery/JS Developer Needed

Very small task required.

var listeners_price= listeners_price_arr[sliderListener];
var bitrate_price= bitrate_price_arr[sliderBitrate];
var disk_price= disk_price_arr[sliderDiskSlider];
var total = parseFloat(listeners_price) + parseFloat(bitrate_price)+ parseFloat(disk_price);

This does not show the decimal "0", after the "." for example "12.50", it shows "12.5" instead.

Can someone fix this for me :)