That, AND... I just don't think of cymbals belonging in "sets". To me, sets are just some cymbals in a box. I look at my cymbal choices and think, who would put all these in a box? I could maybe see some marketing pairing of maybe some big star drummers box cymbal selection, offering the same cymbals that HE or SHE plays.. but even then, that's a small demographic that would be interested in that.It's hard enough to find one good sounding cymbal.
Its also like music for me. If I buy a whole lot of stuff at once, I don't feel that I absorb and appreciate my selections the same as if might if I purchased them individually. Maybe its just me, i dunno.