On eBay, you need to look at completed listings (advanced search). People's buy-it-now prices don't mean a thing. And some things come by so rarely that there might not be a completed listing to look at.
I guess the last thing I'll add is this; I've purchased so many things in my short life that have been used, but have been in functionally perfect condition. Once you get something like that, you can never go back to buying "new" again. Buying used and finding bargains is a skill, and it's one of the few skills that pays off in an immediately tangible way. You can live beyond your means in a sense... particularly in this post-analog world we're apart of.
Ok, soapbox down.