You can download unlimited , by purchasing a subscription.
Event Gallery 3 adds a full cart & checkout process to the gallery.
Don't be mistaken by the name. Event Gallery is a real multipurpose gallery component which fits many needs. If you want to get even more features, please have a look at Event Gallery Extended.
Google Photos is limited to 30 photos per album in the free version.
If you encounter any issues, please let me know. Usually, they can be solved in a couple of hours or even faster. Please check the requirement section in the manual to sort out possible issues as soon as possible.
Since the installation package is large make sure your upload limit is high enough. If not just use the download link to install it using the Joomla Extension Manager.