Everyone seems to have money to burn... Buy some MT Zefal mountian bike barend mirrors, $13cdn a piece and they work great. At $13 a piece they are cheap to replace if you wack one! They work just as well as the $100 mirrors without the poser carbon fiber (they are probably lighter too).
C'mon now. No need to be thrifty, I mean who buys a gorgeous Italian extravagance to be cheap? ;D But seriously, if you like the bicycle mirrors, that's cool. Just remember that everyone has that thing that everyone else thinks they are crazy for spending all their money on - for most of us, it's probably our Monsters.