If a shooter is going to use their scope only at a range, twice a year and only at one distance, then the cheap scope will be fine. However, if you want to use it in varying conditions, distances and a lot, don't buy cheap optics.
There are several aspects that separate low dollar scopes from good ones. The repeatability of the adjustments, the clarity (distortion free), light transmission, parallax and durability are all things that can't be gathered by looking through an optic at the store; it must be experienced. Generally, an optic that has to have "gadgets" to sell it, is not worth even the low price it's being sold for.
Consider this, why does a Zeiss scope cost 4-10x more than a UTG, but has only half the features? The answer lies in the quality of the glass which should be the most important aspect of buying any scope. The cheap scope tries to wow you with fluff because they can add that stuff for little money and not put the effort into the glass that other, more expensive, scopes do.
I'm not going to try to talk anyone out of buying whatever scope they want. If being able to color your reticle in 36 shades is what's important to you, by all means get that one. However, if you want to shoot McMillan sized groups, you'll have to spend more than a little money. If you don't know what I mean by that, then the $150 scope will serve you well.
Or the rifle is 
