I am not sure what the "rifle to scope price-ratio" is all about, as some people have said here. So if I get a $1000 rifle, I get a $333 scope and if I get a $300 rifle, I get a $100 scope?
I'm not sure where people get this stuff, but do yourself a favor and
don't listen to it.
Much more is involved with a good scope than a little extra light gathering. Actually, that doesn't really have anything to do with the quality of the scope. A variable scope has a set of lenses that move when the zoom is adjusted. Furthermore, that set of lenses move in a manner that requires extreme precision to keep the reticle "zeroed" when zooming in and out. For example, if I zero a poor scope at 2X, at 7X, the reticle may move slightly. The impact of this is obvious and it's something a good scope will not do.
A good scope will generally be a 1-piece design, thus maximizing the strength of the scope. Reticle strength is another attribute a good scope will have. For obvious reasons, you don't what anything to happen to the reticle. Clarity (which a good scope will have) will help with accuracy. It may be difficult to determine something like reticle strength (and various other "good-scope attributes), but trust me, a $50 scope won't cut it.
The point I am getting at is that you really have to do some research to understand what a quality scope is, what it does, and why you should choose one over an inferior one. There are always going to be those who say things like, "There is no difference between a $50 scope and $500 scope...all you're paying for is a name." My advice: don't listen to those people because they are not knowledable. Poor marksman are not affected as much with a poor scope, but they won't get much better with one either. Furthermore, any semi-serious hunter should know what a good scope is worth to them in the field when compared to a poor one.
Personally, I think one should get the best scope one can afford, no matter what rifle it is to be put on. If $300 is too much, then save a little longer. It will be worth it versus settling with a cheap Tasco or something like that. Just keep in mind that "light-gathering" is inherant by design not quality (besides lense clarity). With that in mind, go do some scope-research. Scopes are complex and you should really get to know what to look for. Once you know what to look for, besides the price tag, you will be able to find a pretty good scope. Furthermore, you will understand
why you are paying what you are paying. Price ratio does not matter at all. What matters is having a strong, reliable, and accurate scope that will maximize your marksmanship, not limit it.