Hi Aurora
Abenas and other premium brands are primarily sold but medical supply websites or a few better pharmacys
If you are in Canada you can get them from Agecomfort.com from the U.S. It's From Gary at
www.xpmedical.com I have dealt with Agecomfort.com and have had no issues and will probably order my supply's from Gary for our next trip to Disney world and have him drop ship them for us to save us having to fly with overweight luggage.
Unfortunately most local retailers seem to stick with the cheaper brands and don't carry premium diapers, I can't recommend enough buying premium diapers as since we have to wear it's a great feeling when accidents happen that you can carry on with what you are doing at the time and trust your diaper to do its job.
I tried depends taped diapers before I found out about Dry 24/7's and the Abena level 4 premium diapers and I was always worried I would leak and I did. Now I no longer worry about leaks they will and do happen from time to time but if you don't push the diaper to its limit its normaly not an issue.