Yes, at that price I would say that it is quite worth it. I actually own Boris Red, which is esentially Boris FX plus Graffiti rolled into one and I find it to be an absolutely essential tool for getting my work done. It is however, a much more expensive product.
Before you buy, I suggest that you download the software and try it first. Though I am comfortable with it, the interface is not intuitive for some people and you might be one of those who does not like it.