Library Manager will only copy a limited number at a time in trial mode. Once you buy that restriction is lifted.
As for alternatives, no there are none at all, not to mind free ones.
That said, what exactly do you want to copy... Copying with Library Manager gets everything - Original, edits, edit history, all the metadata, faces and so on.
If you don't want everything then you can simply export from your iPhoto to a folder on the desktop. Copy that folder to the other machine and there import. This process will have the following limitations:
- you will need to choose between the original and editied version, you won't get both and you'll lose the edit history (the ability to revert to the original, if you export the edted version)
- You won't get the Faces.
Petty much everything else can be exported. If you wan to preserver the Event titles then simply create a folder on the desktop. Name it for the Event. Export the contents of that Event to the folder. Repeat.
This User Tip
has details of the options in the Export dialogue.