It is not just whether you can afford buying amiga parts, but also if also if you can justify buying amiga parts.
Pretty much, this. If there was something I *REALLY* wanted, price really doesn't factor into it. I've owned several thousand dollar computer components before, and could again. If I really wanted a Cyberstorm system, it's well within my grasp. I just know I wouldn't really use it for much, and that money would be better spent elsewhere.
So, while I could buy any part I wanted, I'd need to have an actual use and purpose for it that couldn't be accomplished much better and easier by other methods. ("I always wanted one" doesn't really cut it.)