|SMELS, the Brampton Flight Centres ad (905-838-1400) is in the top right hand corner of the this AvCanada page and says the IFR renewal is $599. Other than that, Harvs air in St Andrews airport has a nice Redbird which do IFR renewals, but I am not sure about the cost. Call them (204) 339 6186 or look at the page:
You may want to give Perimeter in YWG a call also at 1-204-783-6845, which is the Flight Training Dept. Not sure about the price but could imagine it can be high.
I think there is also a Transport Canada approved flight test examiner in Red Lake who works at a specific airline, but I'm not sure if that individual does in-house IFR PPC ONLY or if he does exceptions to IFR renewals, assuming he is familiar with the intended aircraft to do the renewal.
Other than that, here are some other flight schools you could call to see if they do them and for how much:
Thunder Bay, Nor'Western Flying Club (807) 629-9626
Trying Confederation couldn't hurt. Since your in YRL, I am going to assume you moved there from elsewhere in Canada, so you could go back to your local home airport and do it back there and make a trip home out of it also.