Free: Contests & Raffles.
Those military sleep system's are great, except, they weigh around 12 lbs. If you are going to pack in, look at Western Mountaineering, Feathered Freinds, Kifaru, Montbell, and Big Agnes. If you want to pack in, in the late season, you have to spend the money, or you will regret it. Light weight, warm bags, are expensive, but can prevent a ruined hunt.
Ya I am not buying a bag I can't pack in somewhere. I try not to buy 'truck camping' gear anymore so that i can continually improve my pack-in set up. right now I have been looking at the Trestles, earlier mentioned, Kelty Cosmic Down 0, and the Marmot Never Summer. Ideally I want sub 3 pounds, but like everyone else, I am still very price point focused, so probably hoping for 3-4. Any thoughts on minimum temp ratings for late season hunts? I was thinking 0?