You will be hard pressed to find a used 16' Scamp
already in BC to buy - Im only aware of 3 of them (rumor of a 4th) very possible there are more but they are keeping a low profile :-) when I purchased mine 5 years ago it was the first one ICBC had register in BC. There were a couple of 13' already registered though ( a few more have arrived since).
As far as a used Casita
goes in BC they may be as rare if not more so than the Scamp
. I only know of/seen one and I seem to think it was resold recently. Thats not to say there are not more hiding around.