Need customization for product page checkbox add to cart

i need a developer which have good knowledge of javascript.Our requirment to get the configurable product price when someone click on swatches on product details page and add the price in total with other related products. see this url https://dev2.ebygghandel.se/komposittrall-teak-classic-trallbrada-25-135-3800-mm.html
. When someone click on swatches the configurable product total should be shown below and it will add in grand total .