In BC, I have ordered from fabric.com and
http://www.missouriquiltco.com/ I prefer vendors that shio by USPS not UPS. UPS will often charge a huge brokerage fee that can be as much as $30.00 on a shipment.
For batting your best bet is to buy locally as shipping it gets expensive because of the bulk. FabricLand West often has batting on sale fro 50% off, check the Ontario version of Fabricland and check their sales, you will need a membership to get the best deals.
I have a friend who has bought lots from Connecting Threads and has been happy with the fabrics.