I am supposed to pick up my new Toro Z master tomorrow. I asked my dealer about the Delux Air Filter Kit for the Kohler 23hp. He gave me a price of $203.00. This seems out of line to me. The Toro Part number is 99-4662. Anyone have any idea if this can be bought for less money? If so where? Is this air cleaner worth the extra expense? All replies will be appreciated.