I have paid in the 90s for a pair of spikes back when I was getting heavy use of my spikes. I actually just recently threw them out after about 10 years of use, including 2 years of heavy use. I'd have to say they were worth the money.
I tend to pay more for shoes I use for racing than ones I use for training. I can't think of a pair of trainers I've ever paid more than $80 for but racers tend to be more in that range. It's just harder to find quality racers at lower prices.