Free: Contests & Raffles.
If its simply for hunting I wouldnt spend that much. I also wouldnt buy a cheapo at Wally world, they won't stay in tune and you will be stuck with a bike that doesn't change gears well and pedals like crap. Personally I would look for a decent used bike on Craigslist. You can find find older bikes with good components pretty cheap. Take It to a bike shop for a tune up and you will be way happier than if u pick up a Walmart bike