Dave
Bought the cargo net from Raingler in the US. The guy's name is Eddie Cline, site is
www.raingler.com. Service was excellent. Cost then about $115US plus $25US postage, arrived in a few days. They seemed pretty switched on in terms of overseas freight and the tricks.
I think there are some local options (?) but the Rainglers looked good on the website, and I was impressed with it. Bought another for the wife's zook. I also grabbed a few extra footman loops from him (see web page) as well - really useful for extra tie-down points around the jeep interior.
Have a look also at
http://www.jeepin.com/features/barriernet/index.asp
for a good writeup and pics.
Only downside - the dog realised one day it was chewable, and ate her way through both barriers within a week of each other. Still have to get them repaired - dog still in trouble.
Best feature - we carry long gear in the car frequently, and it's just a matter of undoing two straps to pass a load over, or for poles, etc, just passing them through.
Down-side - can't mount things like recovery gear bags, fire ext etc to it conveniently like a solid metal barrier.
Cheers
Dave