Well here's what happened and what I've decided.
1. despite two calls to Bank Street Animal hospital, they still have not returned my call to say if Dr. Mobarak will spay and if so what's the cost. But Blackburn Hospital told me he will spay for $325+tax+meds.. so figure around $400 per rat.
2. Dr. Auger will do it for $320+tax +meds, but requires an initial exam, which comes to another $80 after tax. So figure at least $400+tax+meds per rat, probably more like $475. Also the receptionist refused to give me any info about his track record with spaying rats.
3. Carling Animal Hospital quoted me $473 per rat. Again, they gave me no information about the vets and their track record with spaying rats. I asked. They thought it was a strange question.
As mentioned previously, none of these vets nor their staff instilled any confidence in me, that they could do this surgery and would be successful.
So I looked into the deslorin implants. Dr. Auger is the only one in Ottawa who does them. He charges $229.39 for the implant PLUS he requires an initial exam which costs $80 after taxes. So total of $309.39 for each rat for the implant. I asked his office if he would give a discount if I brought in several rats at one time for the implants, and the receptionist said no, but she will check with Auger anyway and call me back. I'll be surprised if he gives a discount.
In the meantime, I checked into going to see Dr. Brieger in Montreal. His receptionist was very nice, helpful, and asked me to hold several times while she checked my questions directly with Dr. Brieger.. wow!.. that was nice! Dr. Brieger said he would give me a discount. First a group rate for an exam (I will bring 4 rats), then waive the cost for the anesthetic, and then a 10% discount for the implant... total cost will be $215 per rat for everything, taxes and meds included.
It's about a two and a half hour drive each way, so we could do it in a day, no problem. There's such a huge difference both in cost and in the way I've been treated in each office.. I'm inclined to just make the drive... I'll post again when the decision is made for sure and on how it goes.
Also, for anyone in Ottawa who might want me to take their girl rats along to Montreal for implants, please pm me.