For Shipping Director and Payment Director, upgrades within the same major version (currently 1.x) are free. Use the same License.txt file. Currently, there are no plans for a major version upgrade. (Note that Shipping & Payment Director have their own version numbers and that the releases are also specific to the nopCommerce version. For example: "Payment Director 1.02 (for nopCommerce 2.80) ". This allows for new features to also be included in versions for prior NopCommerce versions.
All our products are available for download so that you can evaluate a fully functional trial version. (Evaluation versions will typically allow use limited by time and/or number.) The evaluation allows you to evaluate our products using your web site in a real-world setting to see if it will meet your needs. Because of this, we expect that when a fully functional license is purchased for your nopCommerce store, you will have already determined that our product is acceptable, and therefore, we do not provide refunds.