Magento Price live update - 26/10/2017 15:30 EDT

this is configurable product price update (visual) works real-time when we change options in the product page [login to view URL] this is a simple product with the custom attribute but price not updating real time, I need to update price real-time in the product page [login to view URL] I know with default js switcher price js works with but we customized it for our need but later find out with simple product option value change doesn't reflect in product price in frontend but its working in the shopping cart. Only bid if you can fix, generic bids will be ignored. I am too busy with other works to look into this.