Fred brings up a good point that got me out of the 'chasing' phase quick also. I was mostly an online buyer but once i went to my first model car show and swap meet I was floored at the value i could get in person. I don't know why that is, but it certainly rings true. For that reason I don't have 'grails' anymore. That and my personality I'm more into that chase than the capture, which can be bad in life.
I finally found my 93 Cobra after many sleepless nights scouring the internet to find one under $30 over a year ago. (before reissue plans) It sat in the corner for months before I actually built it.