You can get signature on flat rate international boxes to Canada, just not as cheaply as you can ship to the US. A quite large flat rate box to Canada with signature is about 25-30 bucks. Smaller boxes are less. The two post offices are actually capable of tracking each others packages on their respective web sites using the same tracking numbers. In the case of Paypal/Ebay, if the parcel is under their risk value (I think it's 100 bucks) you can just get delivery confirmation and that's adequate paypal proof. Over that you get a sig.
I've been on both sides of the border and shipped all kinds of stuff both ways. The computer integration between the two post offices makes it probably the easiest international shipping to do in my opinion.
I've been on both sides of the border and shipped all kinds of stuff both ways. The computer integration between the two post offices makes it probably the easiest international shipping to do in my opinion.



















