Free: Contests & Raffles.
I'm going with a BA Mystic 15 and the Q core SLX. Did a lot of looking, I am not small so the specs for the bag are what sold me.
Most of us likely own 30 sleeping bags for a reason: one won't do everything as well as we want. Use a 30 degree, $40 walmart bag for summer, and put the money into a bag for Idaho October. Or, you could just pack two of the Walmart bags. Both ideas work.