Problem with my page

I have a problem with this code to show the price of a product to me
Here on web:
pastebin from html code: (Too large to put here)
javascript code to show the price: (Too large again to put here)

This is the structure of the page:
In the “CURRENT STANDING” tab, you select the league and then the server.
In the “DESIRED NET WINS” tab, you select the amount of net wins you want then the price would already appear but this is not what is happening.