You can get a good Bushnell Trophy scope 3x by9x 40 mm at Cabela's for $109 or $139.99 (see chart in this link)
Cabela's -- Bushnell® Trophy® Riflescope
I have used them (Trophy) in my rifles and they are good, with precise adjustments and are fogproof.
In the mounting system use Weaver bases and Weaver rings and you will have a solid system for litle money.
If your hunts are going to be expensive out of state hunts, I recommend spending the money in a Leupold Vary X II 3x by 9x 40mm and using Weaver bases and a strong Leupold Quick Detach Weaver style ring, (so you ewill have access to your irons) like this:
When I hunt in my state I carry an extra rifle as a spare. When I fly on out of state hunts and I can carry only one, I have a spare scope on rings, and extra fiberglass stock and firing pins, screws and springs and the tools.
My rifles also have a lower power scope on rings, for when I have to hunt on heavy brush. It is usually a Leupold 1x to 4x shotgun scope with heavy reticle.
All this is set on the Leupold Quick Detach Weaver style rings.
This is as an Insurance for optics failure, Murphy is allways there in the hunting fields trying to screw up your hunt.
Now, I bet you the next post is from a guy that hunted for 40 years in 5 continents using the same rifle and scope. Lucky bastards