Pretty sure you CAN technically take someone to small claims court over as little as 25 dollars.

Just as example, years ago my mother was watching a Judge Judy case where the guy was taken to court over a case of YuGiOh cards which cost something like twenty bucks and to file the case, it was 35. When he won, he got his 35 back as well as the judgement.

So at least in the States, it is definitely possibly and from what I recall of law class, the States and Canada's basic lower courts are very similar.