If you have variable priced downloads in Easy Digital Downloads, you’ll notice that the first option is always checked by default. By being checked, the customer may think this is the best, or most preferred option. This also tends to be the cheapest option if you have set them up from the lowest to highest priced option.
Here’s how you can disable the variable price options from automatically being checked. Copy and paste the following function (mind the opening PHP tag) into your child theme’s functions.php or custom plugin.