^ blackheart is right, i had a buddy's cheap jap bike seize a rear caliper on the trails with me last month... we just pulled the caliper outa the way and tied it off, and rode on.
150 bucks (or watever it is at 100+) is unreasonable... ive ran cnc, and yes this is unreasonable... idc wat ppl say, the part is mere vanity at that price.

 

ya way to pricey.