Upgrade from any earlier Professional version or KLS Backup 2017 Standard Lifetime License
All maintenance upgrades are free. If you purchase a license, you are allowed free updates for the corresponding edition for the same minor version. For example, if you own version 9.0, and version 9.1 is released, you will receive the update free.
You pay for the software only the first time and get all new versions for FREE and for LIFE.