Well there are 2
http://thecomicbookshoppe.com/ locations in the city, and a Silver Snail downtown I believe. There may be a collector store in Bells Corners somewhere I am not sure. I usually acquire stuff from zellers/tru/walmart or ebay/kijiji. Hm the yahoo group might know if that sort of thing happens (the monthly meetup) I am not sure, if it does I haven't attended one yet.