$product = wc_get_product($product_id);
    $attributes = $product->get_attributes();
    foreach($attributes as $key => $attribute) {
        if($ending === $attribute->get_options()[0]) {
            $cart->add_fee('Discount due to being a student at '.$attribute->get_name(), $attribute->get_options()[1]-$product->get_price());
            break;
        }
    }