Nilo Velez

There are some cases where you don’t need all the billing fields of a digital product checkout. This plugin lets you remove some fields of the checkout page when all the products in the cart are downloadable or virtual.
Since version 1.2, the default behaviour is to remove billing fields only from free orders (those where the cart total is zero). You have the option to remove billing fields from all orders, but keep in mind that you will need those fields for invoicing if you are charging for the products.

WooCommerce Simple Checkout for Digital Goods

Removes billing address fields from the checkout page when you only have downloadable and virtual products in the cart.

Ivan Popov

This plugin lets you attach an extra fee — either a percentage of the cart subtotal or a fixed amount — to any WooCommerce payment gateway or shipping method. Configuration lives under WooCommerce → Settings → Checkout Fee.
Typical use cases:
<ul>
<li>Pass card-processing surcharges to customers paying with specific gateways.</li>
<li>Add a handling fee for Cash on Delivery.</li>
<li>Add a packaging/insurance fee for express shipping methods.</li>
</ul>
Features:
<ul>
<li>Per-method configuration — every payment gateway and shipping method has its own settings.</li>
<li>Choose between a percentage of cart subtotal or a fixed amount.</li>
<li>Optional taxable flag so the fee can be included in tax calculations when required.</li>
<li>Customisable fee label shown to the customer.</li>
<li>Works with the classic checkout and the block-based Cart & Checkout.</li>
<li>Declares compatibility with WooCommerce High-Performance Order Storage (HPOS).</li>
</ul>

Payment and Shipping Method Checkout Fee for WooCommerce

Add a percentage or fixed fee to any WooCommerce payment method and shipping method at checkout.

WooCommerce Simple Checkout for Digital Goods vs Payment and Shipping Method Checkout Fee for WooCommerce