Buying used mower for parts

I have the chance to buy a used mower for cheap. It's an Exmark commercial 30" with a blown motor. It is about a year old. I was thinking about buying it for parts. They are 2300$ + tax new around here and he is selling it for 350$. The parts alone that I could salvage (wheels, spindles, belts, cables, blades, hardware, etc.) are way more expensive than 350$. Of course I will take a look at it and see in what shape it is in. I just wanted some other opinions. To me, it sounds like a steal.