Shipping 80lb amps.

I'd agree with others regarding insurance. I've heard horror stories regarding insurance claims with a carrier. Don't waste your money.

Delivery companies, what a racket, it's one of the only business's that makes you pay for insurance in case they can't do their job properly.

I’m in Edmonton, just north of Calgary and best would be FedEx Ground. It’ll come across the border from Michigan to Ontario, clear a Customs there, sits in warehouse for a day or 2, then starts the drive across country, about 4-5 days.

As a Seller who has shipped from Canada to the US off of Canuck Audio Mart several times, I get the rate with insurance and Buyer pays amounting owing. Once done email them their tracking info. I’ve never had a problem with FedEx either, not sure about State side, using Canada Post is another nightmare in itself.....

You can usually find pallets in industrial parks or behind active strip malls. 

You can screw down the crate onto the pallet but you also need to use straps. Ratchet types work well but make sure to go in opposite directions. 4 straps.

 It can still be turned sideways to fill in gaps and other items will be stacked on top of it regardless of stickers. Also insurance does work in case item goes "missing". 

One more thing labels on wood can be problematic. Multiple locations on the outside, label on the inside,  maybe one of those tracking devices folks on using onchecked luggage. Good luck.

I have shipped quite a few items that were expensive/heavy. I would and have simply build a tight fitting plywood box to encase the item. Overkill? No frikken way