Hey guys & girls, I just got a couple guinea pigs and I'm new to the forum. If you're looking for cheap coroplast in Canada, go to proveer:
Proveer formerly East West Plastic | Sign Supplies
I got two sheets of 4' x 8' coroplast (4 mm thick) in medium blue for $26.46 after taxes, it was about $11.75 or so per sheet before taxes. It was a pretty good deal considering I've heard of other people paying $30 per sheet!