I've signed up for email updates from DinkyDoo out of BC. I haven't ordered anything from them yet, but they carry all the brand name fabrics and have sales on a regular basis.
Other than that, if I can't find something locally I tend to order from Fabric.com. It is from the US but the prices are good and the delivery time is unbelievably fast. There sometimes is a duty charge to pay but they ship by UPS so you can pay it online so you don't need money when the driver shows up.
Seriously, my daughter ordered fabric on Monday night last week and it was here before the end of the day on Thursday.