I've never been inclined to pay a lot for a spinning reel. For some fishing such as surf fishing it may be justifiable, & to some people, just not to me. My higher priced spinning reels are my surf reels, Daiwa Emcast Plus reels, but they're not even high priced compared to some on the market.
I've always done well with Daiwa spinning reels for freshwater fishing and have several. I won't recommend a particular model, as they seem to keep changing them or discontinuing them. The ones I have are models such as the Samurai & Sweepfire, which for the price have been good for me.
I also have a couple of Mitchell Avocet II reels, which I have no complaints about either. I have several older Mitchell 300 reels too, which I've had for many years, and they still work fine.
You might also consider Wavespin reels. They're funny looking, and I was skeptical when I bought one, but they're actually made quite well, and they perform very well.
Of course, if you want to go very high end, take a look at a Van Staal.