I guess it depends on what you call high-end.
I tend to maintain that knives are tools...at least in my use/house. Now, I like quality tools and I'll pay for quality. But the most expensive knife I have now is probably tops out at $250-300 of value, but I've paid more in the past (and regretted it due to a thief). Now $300 will buy you a lot of fixed blade goodness......
For me, $200 is the upper most limit unless it's a special case. I'll pay more for Busse et al, because of their warranty and their steel. ZT also holds a special place in my heart...but I find that most of my enjoyment from knives comes from sub $100 blades....especially folders....which plays out in my use as well. I like carrying and using less expensive knives because I'm not worried about damage/loss/theft. So, I've decided to move predominantly towards sub $50 folders in the foreseeable future (although I don't mind spending more for a good FB).
Although, like others have said....it's an addiction. I'll likely end up eating my words and having one of those spiffy 0808's showing up on me.