Looking for Saturn Sunroof Parts - Western Canada

The sunroof on our 2001 Saturn SL2 has failed. We were advised by the service department at our Saturn dealership that the entire sunroof needs to be replaced at a cost of $2100.00. We also had an issue last year with the drain by the sunroof being dislodged and causing leaking in the car. Fortunately they knew exactly what the problem was and quickly fixed it. We believe the failed part on the sunroof is the PLASTIC guide in the track. We have used the sunroof under 100 times. Fortunately we did not purchase this option on our second Saturn. I am looking for a supplier in Western Canada that would be able to supply us with parts. Having an inoperatable feature such as a sunroof would greatly devalue the car, however purchasing an entire new sunroof seems ridiculous and is not an option.