You get what you pay for if it is a "brand" name scope.
In my experience, I have found that the scopes in the price range you can purchase at WalMart is not the best. Even Wally World's $79.95.
A general rule of thumb for some quality is to purchase a "brand" scope that costs at least as much as half of the rifle you are putting it on.
If the rifle costs $700, then a $350 scope.
Now other things come into play. What reticle, tube size, range of magnification, parallex, lighted or not lighted?
I've had a guy order a Leupold scope that the MSRP was over $1200 that he mounted on his NM M14.
"A well regulated Militia, being necessary to the security of a free State, the right of the people to keep and bear Arms, shall not be infringed."
Life Member NRA
Life Member NAHC
Former President of the ECPT (Eifel Combat Pistol Team)