$450.oo for any fiberglass undertail is way to expensive, fiberglass will crack and tear after a while, ABS plastic is what you want same stuff the body panels are made of, I have heard of some extreme graphics tails not fitting good and I have heard some fit good.
the big factor is, what color is it painted? does it match your bike, if its color painted then its about $100/150 too much for a new one.
you can get very good ABS undertails with good LEDs for around 300