If you want a good deal on the Insinkerator hot water dispenser then http://www.medleysoft.com is the place to be. They have tons of listings for Insinkerator products there, and the pricings are very good too. For those that do not know, the Insinkerator water dispensers are amazing; they provide hot water instantly (no waiting for the hot water to go from your hot water heater tank, through the pipes, all the way to your sink). I believe that Insinkerator also makes some pretty good garbage disposals too, which is great for any kitchen. Those can be found at Amazon.com most likely.
Also, if you do decide to buy an Insinkerator hot water dispenser, be sure that the site you buy from offers a good return policy, just in case the product happens to be defective or something. While this is highly unlikely, you never know what could happen, so it is better to be safe than sorry.