How to add price variations

Hi,
Im trying to add variations to my products and i was wondering if there was a way to add variations with price differences. For example i have a t shirt that comes in 4 sizes, small medium and large are all the same price but XL is 5 dollars more is there a way to do that?

You can do that by going into "Manage variants". There you will see the list of variants generated from the characteristics you created.

You can change or rather, override anything you had set in the main product. There you can set the price for the XL. For the other sizes, you can just leave them if you want. Those will pick up the price from the main product.