There are posts giving more info on this in the Age Verified Discussion section. Go get a look at it.
-oh, wait. You're not AV'ed. Well get AV'ed then
As to your question, IIRC ECA charges you 150% of the retail price, plus a "special shipping option" and shit like this. They can't actually guarantee anything, they just gamble hoping it won't be noticed.
All this in USD, so you end up paying about 80-90% of the Canadian price, but still with a 50% seizure. Their website can show whatever stats they want, if they're compiled by themselves... Can you really take them as accurate? No.
Or that guy is doing some kind of viral pub for ECA, in which case, ITS A CONSPIRASSY!!!!! OH NOES