As I suggested, it all depends on the method. If it is being sent fast with someone like UPS/Fedex then it will be very expensive and $65 is to be expected; the Amazon price quickly ramps up when fast shipping is selected. The point is that, unless I needed something urgently, I can not justify a 2-3 day option for $65, and would prefer the choice of a 2-3 week option for something like $15 - regular USPS parcel.
I've bought enough stuff from the USA over the years, from a variety of vendors and a variety of industries, to know these ballpark shipping rates.
Btw the module I want is Crypt of the Everflame (out of print) and Paizo have the non-mint version, hence my desire to buy from Paizo. The PDF remains a fantastic option, which I expect I will go with, however naturally it's not suitable for the core rulebook.
Ultimately, I am simply pointing out that a sale will be lost, and the reasons for it.