The prices in Canada are different than that of the states. Here small ones usually go for $300-350CAN. I bought mine from a private seller. There was a catch though
with my fly river turtle. I bought her and she was under weight, she had shell rot and there was fluid in one of the lungs. It was 50/50 that she was going to live.
But look at her now, after the proper food and clean water along with 1 trip to the vet she is back is pristine condtion.

And this thread is old, she is even bigger and better now, I will do an update when I have the time.