You can add the option with price in the admin panel.

Features:
You can add the option with its price in the admin panel. When you add the option with price, this price will add all the product options. You don’t need to go one by one to all products and add new price. You can control option with price from just one place. This will save you time and effort. 
Demo :

Username: demo
Password: demo

Note: If you find any issue during the installation OR you need support(free) from me. You can email me with the following details
1) Extension purchase id
2) You opencart admin and FTP access.

After my support, if extension still does not work on your store then your payment will be refunded. Feel free to buy the extension.
You can find my email address in the extension OR comment here for support, I'll contact you.