The Nikon Prostaff,Redfield Revolution,Burris Fullfield IIs, and Bushnell 3200 Elites/Trophy XLTs, and Weaver K fixed scopes are all in that price range. All but the Redfield,Weaver and Trophy XLT are being discontinued or revamped,so they are on discount now.
The old coin adjustable pro-staffs are currently being clearanced to make way for the new finger adjustable Prostaff's that are fully multicoated. Make sure you know which one you are buying (usually the old ones).
The Vortex 2-7x-32mm Viper is the only Viper within your budget. It's better glass and adjustments than any of the above, and is currently on deep discount with several vendors since it's being discontinued.
That said, I'm not a fan of really compact glass on larger bolt rifles.
Sportsmans Guide prices are "meh". Check out SWFA,Midsouth Shooters Supply, and Natchez Shooters Supply. Maybe Cabelas, but their prices usually stink like SGs.