Hi guys. It's pretty easy to take the bed extender apart into 3 sections, and it might save you a couple bucks to ship. This way, I think UPS/USPS/FedEx should be around $25.
This manual explains it: http://www.nissan-techinfo.com/asistgc_1/diskdocs/1/T/H/1TH40.PDF
This manual explains it: http://www.nissan-techinfo.com/asistgc_1/diskdocs/1/T/H/1TH40.PDF