Manual: Users can manually renew for 40% off the normal price after one calendar year for continued updates/support. After license expiration the plugin will still work but will not receive updates or support until manually renewed.

Subscription: Users will be billed annually and automatically at 40% off the normal price without interruption. Users will also get continuous updates and full support without the need to worry about renewing manually every year.

Site Licenses: Number of site licenses indicates the number of sites (URLs) the plugin can be active on at any one time. At any point you may deactivate/uninstall the plugin to free up the license and use the plugin elsewhere.

Multisite (MU): All licenses can backup & migrate a WordPress standalone and full Multisite. Multisite Plus+ can install a Sub-site as a standalone site. More sub-site features are planned for Multisite Plus+ in the future.
For more details see: How does Duplicator handle Multisite (MU) support?

Power Tools: Power tools are enhanced features that greatly improve the productivity of serious users. Current features include hourly schedules, installer branding, installer salt & key replacement, priority support and more. More features will be added in the future.

Gold Package: This option is a one-time payment for lifetime updates. After the first year, support is limited to 5 tickets/year - however, if more than 5 tickets are needed in a given year users may submit an appeal which will be considered on a case-by-case basis.