Are there any vendors in Can or US that sell 1/72 PE and AM products?

Have you tried Squadron or Sprue Brothers? There are lots of vendors out there-- Stevens International carries 1/72 scale PE, but I think they only vend to LHS, you can look at their product listings, then try and find one of their vendors. I asked Eduard the question about the availability of a PE set for the 1/72 scale Dragon Atomic Annie set about a year ago, but they told me they were going away from 1/72 scale armor PE as there wasn't as much demand as other scales. 1/72 does seem to be harder and harder to get. Good Luck.
VR, Russ