On a Mini-14 I wouldnt put anything more on it than a Redfield 2-7x or something similar. They are not the most accurate rifles, so you are looking in the right price range @ sub $200.
There is a million threads on cheap scopes. I'll sum it up for you. There are 2 types of cheap scopes.
1] is a cheap POS from a company that ONLY makes Cheap Crap.
2] is a lower end scope from a company that also makes nicer higher end stuff as well
Hic Ego Statio
If I didn't have this gun the King of England could just come in here and start pushing you around. Do you want that, well do ya? - Homer Simpson