Does any retail sell surplus military survival kits?

I was looking at the USAF survival kit review on the equipped webpage, and it said the civilian sales of them run about $40 (something) but I can't find any place that sells them.

Older kits are ok too (not nessesarily USAF either)

I recieved a military jungle style survival kit and most of the contents were expired, but some of the parts were nice (the compass for example)