Actually, I have more to add from that email:
How the Growler filling process works.
1. Visit a Craftbeer Growlers Filling Station. e.g. Carry Out Off-license in Tyrrelstown, Dublin 15.
2. Buy a 1 litre (€3.50) or [b:2q39fk4h]2 litres (€7.00[/b:2q39fk4h]) Craftbeer Growler.
3. Select your choice of Craft beer from the menu.
4. Fill your Craft beer Growler. (We will do that for you.)
5. Label your Growler
6. Take your Craft beer Growler home.
7. Pour your beer into a glass.
8. Drink your Craft Beer ahhhhh!
9. Wash your Craft beer Growler thoroughly. See
instructions.
10. Return to your Craft beer Growler Filling Station.
11. Go To Step 3
12. Continue forever and ever. (Heaven or what?)
Great price for a growler. Unless it's PET but I think they are glass as they mention they also fill PET bottles.