Please read the entire post "good used commercail grade mower" USED being the key word. Noone said anything about a NEW mower.
If he looks to buy out off season he can get a deal. Check out the daily paper in the winter time and you will see tons of deals. I would also check with dealership let them know what you are looking for and price you want to spend. Most will give a you a 90day warrenty(on USED EQUIPMENT) if you ask for one, for peice of mind.