I changed my timming chain under warranty. It was a lot cheaper than what you were quoted, cause my warranty was from BMW Germany, and I had to pay up front, and wait for money from them, that's how I know how much it was. All in all, about 700 USD.
Anyway, it was the original timming chain, but there was a belt the guy showed me, I'm not sure what belt it was, that was heavily used. He said he hadn;t seen that usage on a belt before, after only 30000 miles on the clock. So the timming chain doesn't necesarily fail, rather the death rattle damages other parts imo.
What advice I can give you is try and order parts from a Peugeot dealer or parts distributor. I'm not sure you have Peugeot or Citroen in Canada, but engine parts are identical and way way cheaper from the french brands. If not, order them from Europe, I think Peugeot or Citroen will know exactly what to give you.