As of a couple of weeks ago Dukes on Queen had a 56cm Capo in black for a grand and Sporting Life Bikes had a silver 54cm Capo in silver for nine hundred bucks (if waiting times are an issue for you)...
The only store I know in Toronto that sells Pistas is Urbane and, based on the setups on the bikes I test rode there, I don't think they have the best mechanics in the world (undertensioned wheels, loose bb, horribly set up brakes)...In addition, the sales staff didn't seem to really know how to fit me properly to a road bike...
Bikes on Wheels has IROs in stock but, if you want the best setup possible, I'd stick with Dukes or Sporting Life since BoW has a sketchy rep at best for their mechanical work...
I've bought new bikes from both Dukes and Sporting Life over the years and both shops did a great job setting them up for me...
Cycle Therapy might be able to hook you up with something too (either a Lemond or a Jamis most likely)...I bought a Jamis Sputnik off of them for nine hundred with brakes and a freewheel installed and they did a fantastic job building it up for me...You could buy a Sputnik off of BoW for a bit cheaper but it won't have nearly as meticulous a setup (which is worth the extra cash in the long run)