The 44" with the 17 Kaw is around $6500, the same unit with the 20 hp Kohler is aroudn $6800. The bagger will run you another $1200. As always your dealer should have the most up to date pricing information.
If you're looking for a Lazer, I am selling mine. I am a homeowner that moved from 4 acres to 1 acre. Look for a TTHP. It's a 2002 Lazer Z with the 60" deck, 25 HP Kohler, striping roller, and mulching kit still new in the box. It has 42 hours on it. I'm selling it for $5500 if you're interested. Im located in Clinton, NJ about 30 minutes from you.