Attached Link: http://www.curiouslabs.com/products/proPack/html/proPackUserGuide.html

If ya got the time, and got the dime, here's 4.7 MB of Offical Pro-Pack Manual info for download... Should answer a lot of questions before you buy it. Also, I have found that its the countries where stuff is sent to that jack-up the shipping costs. The UPS and FedEX charges actually hide big VAT taxes that countries make these shippers charge as part of the charge...