I'm well aware of UPS's charges.
I have no idea what the dims/weights of the box were- I got these about a year ago and they are long gone.
Like I said in an earlier post, I received mine as a gift and didn't arrange shipping or anything. All I do know is that my dad said the dealership included all shipping charges and he covered them. It wasn't until UPS sent me to collections for about $35 that I found out it wasn't all covered.
Being in transportation/logistics, I can wholeheartedly support your recommendation to use the national postal services to do cross-border shipping. You're much less likely to run into these surprise charges than using UPS or Fedex.
Someone could have done fairly well about 4 or 5 years ago getting a lot of these canadian bars into the states and selling them here on the forums...