dariodev

<?php
// only copy the opening php tag if needed
// Change the shop / product prices if a unit_price is set
function sv_change_product_html( $price_html, $product ) {

	$unit_price = get_post_meta( $product->id, 'unit_price', true );

	if ( ! empty( $unit_price ) ) {
		$price_html = '<span class="amount">' . wc_price( $unit_price ) . ' per kg</span>';	
	}

dariodev

<?php
// Paste everything below this line to your child-theme's functions.php file. 

// Rounds up all shipping rates by the $roundUpBy value. 
// After pasting this snippet, reset the WooCommerce shipping cache, e.g. add an item to the cart.
add_filter('woocommerce_package_rates', function ($rates, $package) {
    $roundUpBy = 5;
    foreach ($rates as $rate) {
        $rate->cost = ceil($rate->cost / $roundUpBy) * $roundUpBy;
    }