Walmart carries the 870SM dipped in RT HDWDs with their newer light weight stock and forearm for $347. Something along these lines:
Camo 870SM $347
Patriot Sear Spring $10
Tru Glo Pro Series Magnum Gobble Dot sights $40
Primos Jelly Head .660 choke $40
Claw sling $25
That beats your budget and will be a stone cold killer.
