Tenrocca. I got to questioning my sanity about the $42 rate so I went back out to see what I did. Here is the link and it does come up with the $41.95 using their flat rate box. If you put it into something else it goes to the other chart. I called the PostOffice and they confirmed the rate up to 20 lbs. so long as you use their flat rate box.
http://ircalc.usps.gov/IntlMailServi...&P=20&O=0&sd=1
Chas