It looks like they fixed that anomaly in 2014 when they updated the rules. It used to state you couldn't dispense more than 10L into any container! Of course everyone just ignored it anyway! But you are not allowed to take more than 30L in any one goIt's 20l for metal Jerry cans, 10l for plastic.
No idea for carrier bags.





At the end of the day its all relative as costs just get passed on to customers..Not so easy when you have about 30K worth of qoutes out there at old prices though 

