All products are delivered digitally once your payment has been processed. If you are checking out a free product then you will not have to enter any payment details / use PayPal. This procedure is necessary in order to provide you with a download link to the software which can be access from My Account > Downloads.
You are also sent an email containing your download link. Please note that a maximum of two downloads is permitted per order and customers are advised to take steps to backup their copy of the software as soon as possible after downloading.