harmonic balancer went out!!!

Driving home in trafic today I noticed my car would shake around 1000RPM when I got home the shaking got worse. I went in and grabbed a bite to eat then went back outside and started the car back up and it felt like a gang of football players were shaking my car!! So I looked under the car and the the balancer was seperated from the shaft!!!!

How hard is it to fix?
Is it common?
How much will it cost?

-Tony
 
wrecked98 said:
my friends dad works at a wrecking yard and he could prob get me a used one. should I do that or should I just get a new one?

dont get a used one thats dumb b/c the same thing could happen 5,000 miles later and really mess your car up. Get a new one and then you wont have to worry about it.