Trying to compare a great stat like the Big O to a great IEM like the 13's, is like comparing a Lamborghini Countach to a Roll's Silver Shadow.
Both are top in their class but not comparable. They serve different purposes and use different means to do so.
They serve different purposes?? Oh, right, one you listen with your ears, the other with your butt cheeks.
haha Joking aside, we're not really trying to compare them per se. We're more interested in how much one is enjoyed, versus the other. Also, let's be honest - if the Orpheus were any bit more expensive while retaining the same level of quality, then many of us would probably have less of a respect for it. It's like those multi-million-dollar diamond necklaces you hear about... they don't look any more attractive aesthetically than some other necklaces, just more glamorous, while only stupid people will stare at the TV screen going "Oooooh" and "ahhhhh" and become envious of the dumb celebs wearing them.