Wow, that is a good deal. A buddy bought a new SQ2 over the summer, and paid over $650 for just the bow! When I bought my Matthews Z-Max back in '98, I paid $550 for just the bow. I hope the draw length is correct. Matthews bows don't have much adjustment (about a 1/2" either way), without changing the cam. But no big deal when you get that whole set up at that price. You will not regret it! Mathews bows are awesome. I shoot Gold Tip graphite arrows from my Z-Max, and have chronographed a few at 300+ fps... with an average speed about 290fps. That's hummin' right along. It seems like you hit the trigger on the release, and the arrow's there already... almost like a firearm.
Good luck hunting with that baby.